Historically, the peppered moth was predominantly white in color with dark speckles. Shortly after the industrial Revolution, scientists started noticing peppered moths that were predominantly dark with light speckles. Over time, the dark-colored peppered moths dominated and the light-colored moths became are. Which of the following best explains this change? A change in the environment caused the evolution of a species. A new moth species moved into niches where a species was dying out. The two species of moth underwent coevolution. Two species of moth competed for resources, and the dark-colored moths dominated.
Habitat differentiation would most likely cause which of the following to occur? Allopatric speciation Geographic isolation Sympatric speciation Temporal isolation
Answers
During the Industrial Revolution, there was a significant increase in pollution, which led to the darkening of tree trunks due to soot and pollution deposits.
This change in the environment favored the survival and camouflage of dark-colored moths on the darkened trees, while the light-colored moths stood out and were more likely to be preyed upon by predators.As a result, the dark-colored moths had a higher survival rate and reproductive success, leading to an increase in the frequency of dark coloration in the population over time. This phenomenon is an example of natural selection acting on heritable traits in response to a changing environment.Sympatric speciation is the process of new species emerging from a common ancestral species in the same geographic area or habitat.
Habitat differentiation occurs when a population within a single geographic area becomes specialized to different ecological niches or habitats. This can lead to reproductive isolation between subpopulations, as individuals adapted to different habitats may have limited gene flow and reduced opportunities for interbreeding. Therefore, habitat differentiation is closely associated with sympatric speciation.Thus, the correct options are a and c, respectively.
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Complete questions:
1. Historically, the peppered moth was predominantly white in color with dark speckles. Shortly after the Industrial Revolution, scientists started noticing peppered moths that were predominantly dark with light speckles. Over time, the dark-colored peppered moths dominated and the light-colored moths became are. Which of the following best explains this change?
a. A change in the environment caused the evolution of a species.
b. A new moth species moved into niches where a species was dying out.
c. The two species of moth underwent coevolution.
d. Two species of moth competed for resources, and the dark-colored moths dominated.
2. Habitat differentiation would most likely cause which of the following to occur?
a. Allopatric speciation
b. Geographic isolation
c. Sympatric speciation
d. Temporal isolation
Related Questions
PPLLLLLZZZZ HELP
Describe the major events in the cell cycle. Begin at G1 and follow around the cycle through M
Answers
Answer/Explanation:
The cell cycle consists of interphase and mitosis (M). Within interphase, there are three phases: G1, S, and G2.
G1 phase - the first 'gap' phase.The cell grows in size, and synthesises the necessary mRNA and proteins required to divide. This is also where the key decision as to whether the cell will divide takes place. This is based on whether or not the environmental conditions are favourable for division and whether the cell is receiving the correct signals to divide. This is called the G1/S transition, and is the critical decision making point as to whether the cell cycle will progress.
S phase - the 'synthesis' phase. The cell replicates its DNA in preparation for passing the genetic material onto the daughter cells. Once the cell's DNA is replicated, it enters G2.
G2 phase - the second 'gap' phase. The cell continues to grow in size and prepare for mitosis. There is a DNA damage checkpoint here, where the cell ensures that the DNA has properly replicated. Next, it moves into mitosis (M).
M phase - the mitosis phase. This consists of 4 stages (PMAT) - prophase, metaphase, anaphase, telophase. The cytoplasm divides during cytokinesis
During prophase the chromosomes condense and pair up. The mitotic spindle forms, and the nuclear membrane disappears. During metaphase, the chromosomes line up at the centre of the cell - at the metaphase plate. The mitotic spindles attach to the chromosomes - to each sister chromatid.During anaphase, the sister chromatids are pulled apart to opposite poles of the cellDuring telophase, two new nuclei form, surrounding the two new sets of chromosomes. Cytokinesis then occurs, pinching the membrane to create two new cells.explain howproteins are targeted for degradation, and give a specific example of when this might occur
Answers
Ubiquitin is attached to the amino group of the side chain of a lysine residue to signal proteins for destruction. A multiubiquitin chain is then formed by the addition of additional ubiquitin's.
The proteasome is a huge multiunit protease complex that recognizes and degrades poly inquinated proteins.
Each tissue is made up of only the proteins required for its function, rather than the sum of all proteins in the body. Thus, protein degradation is required as part of the cell differentiation process to allow for the proper differentiation of cells and proteins into the right tissue.
The ubiquitin pathway degrades a protein in two distinct and sequential steps: I covalent attachment of numerous ubiquitin molecules to the protein substrate, and (ii) degradation of the targeted protein by the 26S proteasome complex, resulting in the release of free and reusable ubiquitin.
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Which of the following is NOT an environmental factor that causes mutations?
Group of answer choices
Bacterial Cells
Virus Infections
Carcinogenic Chemicals
Radiation Exposure
Answers
Answer:
Virus infection does not include mutation because that will just infect the animal. Also it depends on the environment they’re in
Explanation:
Virus Infections are NOT an environmental factor that causes mutations.
Virus Infections is NOT an environmental factor that causes mutations because it is dependent on the virus and will cause infections only.
What is a virus infection mutation?When the virus replicates it causes infection to spread and the end copy has different DNA and RNA that causes mutation.
Hence concluded that virus infection is not environmental factor that causes mutations.
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Which characteristic of sexual reproduction has
specifically favored the survival of animals that live on
land?
1) fusion of gametes in the outside environment
male gametes that may be carried by the wind
fertilization within the body of the female
4) female gametes that develop within ovaries
2)
3)
Answers
hello I was just wondering if there a picture or something that comes with this
many international organizations fight to protect endangered species. What is the role of the World Wildlife Federation?
Answers
Answer:
World Wildlife Fund (WWF), is a global conservation organization dedicated to protecting the environment and promoting sustainability. While the WWF is well-known for its work in protecting endangered species, its mission extends beyond that to encompass a broader range of environmental issues.
Key areas in which the WWF is actively involved:
Conservation of Habitats: The WWF works to preserve and restore ecosystems and habitats worldwide, including forests, oceans, rivers, and wetlands. By focusing on habitat conservation, the organization aims to maintain biodiversity, protect vulnerable species, and ensure the overall health of ecosystems.
Climate Change Mitigation: The WWF recognizes the urgent need to address climate change and plays a vital role in advocating for sustainable solutions. The organization supports efforts to reduce greenhouse gas emissions, transition to renewable energy sources, and promote sustainable practices across sectors such as energy, transportation, and agriculture.
Sustainable Development: The WWF promotes sustainable development practices that balance economic growth with environmental conservation. It collaborates with governments, businesses, and communities to develop and implement sustainable policies, strategies, and practices that minimize environmental impact while supporting human well-being.
Environmental Education and Awareness: The WWF believes in the power of education and awareness to drive positive change. The organization engages in public outreach campaigns, educational programs, and community initiatives to raise awareness about environmental issues, inspire action, and promote sustainable lifestyles.
Sustainable Business Practices: Recognizing the influence of the private sector, the WWF works with businesses to promote environmentally responsible practices. It collaborates with companies to develop sustainable sourcing policies, reduce environmental impact, and foster the adoption of more sustainable business models.
Conservation Finance: The WWF supports and implements innovative financial mechanisms to fund conservation efforts. It explores strategies such as impact investing, partnerships, and fundraising initiatives to secure the necessary resources for conservation projects around the world
Explanation:
By addressing these and other related areas, the WWF strives to create a world where people and nature can coexist sustainably, ensuring the long-term health of our planet. hope this helps you! :)
Materials such as carbon and nitrogen go through cycles. The cycling of nitrogen waste materials is mostly dependent upon the role of which factor?
A. trees
B. atmosphere
C. sunlight
D. bacteria
Answers
C: Sunlight
the physical fragmentation of foods into small particles by chewing and mixing with digestive fluids is called: group of answer choices absorption. chemical digestion. mechanical digestion. excretion. peristalsis.
Answers
The physical fragmentation of foods into small particles is called mechanical digestion.
Thus, the correct option is C.
Digestion includes both mechаnicаl аnd chemicаl processes. Mechаnicаl digestion is а purely physicаl process of mаking food pаrticles smаller to increаse both surfаce аreа аnd mobility. Mechаnicаl digestion does not chаnge the chemicаl nаture of the food. It includes mаsticаtion, tongue movements thаt help breаk food into smаller bits аnd mix it with sаlivа, mixing аnd churning of the stomаch to further breаk food аpаrt аnd exposing more of its surfаce аreа to digestive juices, аnd peristаlsis to help move food аlong the intestinаl trаct.
Your options aren't well arranged, but most probably your options were
A. absorption.
B. chemical digestion.
C. mechanical digestion.
D. excretion.
E. peristalsis
Thus, C is the correct option.
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a urine specimen is obtained by a client cleaning the exterior meatus, then beginning to void, then collecting the urine sample midstream. which type of specimen does this describe?
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A midstream urine specimen collection involves urine specimen obtained by a client cleaning the exterior meatus, then beginning to void, then collecting the urine sample midstream.
Thus, to prevent the sample from being contaminated by outside microorganisms, the client in this approach cleans the outer meatus, which is the entrance of the urethra. The customer then starts to pee and obtains a urine sample in the middle of the procedure.
To avoid include the first section of the stream, which can contain germs or urethral debris, in the sample, the midstream urine must be collected. The sample is more likely to give an accurate depiction of the urinary system and reduce external contamination by being taken midstream.
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Based on your observations, how might the Broadleaf forest change in the future, assuming it continues to undergo succession without any further major disturbances? State two possible ways the forest might change or develop.
Answers
Based on my observations, The Broadleaf forest change in the future if the Broadleaf forest continues to undergo succession without any further major disturbances, it might experience two possible changes succession then lead promoting biodiversity and ecosystem health.
Succession progresses, the overall species composition of the forest could shift. Initially dominated by pioneer species and fast-growing trees, the forest will gradually give way to more shade-tolerant, slower-growing tree species. These species can thrive in the shaded conditions created by the existing canopy and will replace the early colonizers over time, this change in species composition will also affect the associated plant, animal, and microbial communities, leading to increased biodiversity.
The forest's structure will likely become more complex as succession proceeds. Over time, the forest will develop a multilayered canopy consisting of various tree species at different heights, with an understory of shrubs and herbaceous plants, this complex structure will create a variety of microhabitats and niches, supporting a diverse range of organisms. The increased structural complexity will also enhance ecosystem processes such as nutrient cycling and carbon storage, contributing to the overall health and resilience of the Broadleaf forest. In summary, without any major disturbances, the Broadleaf forest's future succession could lead to a shift in species composition and an increase in structural complexity, promoting biodiversity and ecosystem health.
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which of the following mechanisms produces phenotypes by changing the location of gene expression in developing organisms: a. heterochrony b. heterotropy
c. heterometry
Answers
The mechanism that produces phenotypes by changing the location of gene expression in developing organisms is **heterotropy**.
Heterotropy is a mechanism of development that alters the location of gene expression, resulting in different phenotypes. It involves changes in the timing, rate, or location of developmental processes. For example, in the development of the giraffe, heterotropy leads to the elongation of the neck by changing the location of gene expression. This results in the development of a long neck, which is the phenotype of the giraffe. Heterochrony refers to changes in the timing of developmental processes, while heterometry refers to changes in the amount or size of structures.
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all you need is in the photo
Answers
Answer:
the color and design
Explanation:
I think those are the differences
Which phrase describes a protobiont?
brown goo
primordial soup
warm little pond
early life form
Answers
Answer:
Its early life form. I got it right
Explanation:
Which of the following biomes is dominated by coniferous trees adapted to surviving long, harsh winters and short, wet summers?
a) coniferous forests
b) tundra
c) savanna
d) chaparral
e) temperate broadleaf forest
Answers
The biome that is dominated by coniferous trees adapted to surviving long, harsh winters and short, wet summers is a coniferous forest. a) coniferous forests
Coniferous forests are characterized by the dominance of coniferous trees, which are evergreen trees that are well-adapted to surviving in cold, wet climates. These forests are typically found in high latitudes and high elevations, where the cold temperatures and short growing seasons make it difficult for other types of trees to survive.
In contrast, tundra is a biome that is characterized by low-growing vegetation, including grasses, mosses, and lichens, that is adapted to surviving in the harsh conditions of the Arctic and Subarctic. Savanna is a biome that is characterized by grasslands and scattered trees, and is typically found in regions with warm, dry climates. Chaparral is a type of shrubland that is found in Mediterranean climates, and is characterized by a mixture of shrubs, trees, and grasses. Temperate broadleaf forests are found in the middle latitudes, and are characterized by a mix of deciduous and evergreen trees.
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Which of the following is an example of a falsifiable hypothesis that could lead to scientific knowledge?
A. Loch Ness has a giant reptile living in it.
B. No aliens have crashed on Earth.
C. Humans were created.
D. Aliens have crashed on Earth.
Answers
Answer:
D
Explanation:
Proof that aliens exist would lead to many scientific discoveries
Many environmental advocates believe that biofuel made from palm oil is NOT an appropriate replacement for fossil fuels such as petroleum because ________. Many environmental advocates believe that biofuel made from palm oil is NOT an appropriate replacement for fossil fuels such as petroleum because ________. burning palm oil actually puts more carbon dioxide into the atmosphere than burning gasoline human rights are being violated because of the palm oil slave trade oil palm plantations take land away from coffee growers it is better to use palm oil in snack foods tropical forests must be cleared to plant oil palms
Answers
Answer:
tropical forests must be cleared to plant oil palms.
Explanation:
Renewable energy is also known as clean energy and it can be defined as a type of energy that are generated through natural sources or technology-based processes that are replenished constantly. Some examples of these natural sources are water (hydropower), wind (wind energy), sun (solar power), geothermal, biomass, waves etc.
Basically, a renewable energy source is sustainable and as such can not be exhausted.
Non-renewable energy refer to a type of energy that is generated through artificial sources or that cannot be replenished. It includes coal, natural gas, fossil fuels, petroleum
Many environmental advocates believe that biofuel made from palm oil is not an appropriate replacement for fossil fuels such as petroleum because tropical forests must be cleared to plant oil palms. Palm fruits are region selective plants and as such wouldn't didn't thrive in regions other than tropical forests.
National geographic has asked you to interview a plant or an animal in relation to cell theory and levels of organization in living things STEP ONE: Identify plant or animal you want to interview STEP TWO: list 7 interview questions and answers from the plant or animal.
I need an animal and the questions wit animals please
Answers
In your own words what is Adhesion water property
Answers
Answer:
Adhesion of Water Molecules. The adhesion property is also often observed in water. This is because the adhesion of water allows it to "stick" to many surfaces and objects. The adhesion of water is best explained as the ability of water to stick to other surfaces through the creation of weak surface bonds
Explanation:
1. Where in the digestive system do the amounts of glucose, amino acids, and fatty acids increase?
Answers
Which hypothesis most likely explains the results at 60°C and 70°C? O A. The substrate has been used up because of the high temperature, O B. The enzyme has changed shape because of the high temperature. O C. The enzyme is only effective at very high temperatures, O D. The bonds in the substrate are weakened at high temperatures
Answers
Answer: Option B
The enzyme has changed shape because of high temperature.
Explanation:
Enzymes are biological catalysts in living organisms that speed up the rate of chemical reactions.
High temperature changes the shape of enzymes.
Increase or high temperature lead to decrease in enzymes activities. This is due to enzyme protein been denatures by high temperature which is the breaking of molecular bonds within the enzyme protein. When the enzymes bonds are broken, the shape of the enzymes changes and they no longer act as catalysts.
How do differences between the peaks and valleys of the two graphs demonstrate interactions between these populations?
Answers
Answer:
peaks and valleys show population increase and decrease between 2 species or more.
Explanation:
the peaks and valleys are used to show predation hence if there is an increase in prey there will be an increase in the predators and if there is a decrease in prey there will be a decrease in predators therefore creating peaks and valleys in that graph hence demonstrating population interactions between the two species.
True or False:
Bacteria are Eukaryotes.
Answers
Answer:
Bacteria belongs to the Prokaryotes family of microorganisms.
Explanation:
The answer is false.
The given statement is False as the Bacteria are prokaryotes usually.
What are Prokaryotes?The cells falls majorly under two categories:
- Prokaryotes and
- Eukaryotes
The single celled bacteria falls under the category of Prokaryotes.
Components of Prokaryotes are:
These cells share common component with Eukaryotes such as
- Plasma Membrane which is an outer covering separating the cell's interior from its surrounding environment.
- Cytoplasm containing cellular components.
- DNA
- Ribosomes, helpful in synthesis of proteins.
A prokaryotic cells is simple, single celled organisms lacking nucleus or other membrane bound organelle.
Prokaryotic DNA is found in the central part of the cell in the darkened region called the Nucleotide.
The diameter of these cells are smaller than Eukaryotes and allows ion and organic molecules to quickly spread to other parts of the cell.
What are Eukaryotes?A eukaryotic cell has a membrane bound nucleus and other membrane bound compartments or sacs called organelles having specialized functions.
The word eukaryotes meant true kernel or true nucleus due to presence of membrane bound nucleus in these cells.
These are found in higher level organisms including plants, animals and humans.
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How does DNA make a complex living organism
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Which of the following describes the characteristics of the offspring of a
cross between pure-breeding tall plants?
A. There is not enough information to answer the question.
B. They will all be short.
C. Some will be tall, and some will be short.
D. They will all be tall.
Answers
Since you would be crossing between two pure-bread tall plant, they would all have TT making them all tall.
What is Zygote and Embryo ?
Answers
A zygote is a single-celled organism resulting from a fertilized egg.
An embryo on other hand is the early stage of development of a multicellular organism.
Organisms that reproduce se- xually, embryonic development is the part of the life cycle that begins just after fertilization and continues through the formation of body structures, such as tissues and organs.
An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization
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how do cells in animals (o.r. birds horses humans etc.) get energy.
Answers
Answer:
From the mitochondria
Explanation:
PLEASE HELP 20 POINTS DUE
Answers
Answer:
bacteria
Explanation:
What is pollination? Identify three ways pollen can be transferred. How is cross-pollination different
from self-pollination?
Answers
Answer:
The transfer of pollen to a stigma, ovule, flower, or plant to allow fertilization. It can be transferred by things that feed from what has pollen. Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Why is it important for geologists to use both relative and absolute ages to determine the age of rocks?
Answers
Answer:
to help and determine the exact age of the rocks
Explanation:
The study of rocks strata is known as stratigraphy. It is useful and helps the scientist and the researcher to study the earth's crust and its past.
Scientist could age the rock using two methods. They are :
Relative ages
Absolute ages
Early scientist could determine the exact age of the rock of the earth's crust. They use to find the relative ages of the layers of the rocks and then determine how one rock layer is older or younger than the other. But with advancement and development of carbon dating, scientist could tell the exact age of the rocks found on the earth's crust.
The Scientists uses the relative as well as the absolute dating technique to date the rock layers. They organize the rock layers based on their age and scale from the oldest to the youngest on a geologic time scale. So an exact date of the rocks can be determine by using the two methods of relative age and the absolute age.
Which structure is involved in the breakdown of red blood cells?
A) liver
B) nephron
C) sweat gland
D) alveolus
Answers
Can a person be exposed to hiv by hugging or shaking hands with an infected person? a. yes, because the virus can be transmitted through sweat b. no, because none of the bodily fluids that carry the virus are on the surface of the skin c. no, not if the skin is completely covered d. yes, so you can't ever be too safe please select the best answer from the choices provided. a b c d
Answers
Answer: b
Explanation: b best fits how the transmission of hiv works