How did Charles Darwin's discovery of Natural Selection affect how people viewed evolution at the time? Why was it problematic?
Answer:
Darwin's theory revolved around survival of the fittest. This meant that only the organisms that were better adapted to the environment would survive, and those that didn't died (and maybe become extinct). The desired characteristics that helped the particular organism to survive, would then be classed as the dominant allele. This could now be passed onto offsprings.
People didn't know much about genetics we only really began to understand it 50 years after the theory was published. Darwin's theory started to help scientists understand how certain traits and diseases could be spread from parent to offspring. Darwin used natural selection to evaluate that humans are descendants from apes. This was problematic because many people thought that God created humans, many scientists argued that Darwin didn't have enough evidence to support his theory.
Explanation:
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Can anyone help me with my homework
Answer:
1. true
2. False
3. True
4. True.
Explanation: Im am so so sooo sorry if i am wronge and I just think that is it.
Match the climate zones to their relative tempature levels
The answers are Polar zones - coldest zone; temperate zones-moderate temperature zone; and tropical zones - hottest zone
Explanation:
One factor that influences the temperature is the latitude or location of places north or south from the Equator line (imaginary line that divides the Earth in North and South). In this way, zones in the equator line and near it that belong to tropical zones are the hottest, this is because due to the tilt of Earth they are more directly exposed to sunlight. On the contrary, zones in the poles that are far from the Equator have low temperatures and are the coldest zones on Earth because they are not highly exposed to sunlight. Additionally, temperate zones that are placed between the equator, and the poles have moderate temperature that is not as cold as in the poles or as hot as in the tropical zones.
Helppppppppppp I'm bad at punnet Square I give you a brainlist or the highest score whatever they do
Answer:
50% dominant
50% recessive
Explanation:
Homozygous means same traits: RR and rr
Out of RR and rr, rr is homozygous recessive since rr is the less dominant genes.
Hence, homozygous recessive: rr
Heterozygous means different traits: Rr where both alleles are different
Cross between rr and Rr:
| r | r |
_____________
| R | Rr | Rr | ==> 1/2 is dominant ==> 50% dominant
____________
| r | rr | rr | ==> 1/2 is recessive ==> 50% recessive
_____________
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Answer:
50% dominant trait
50% recessive trait
Explanation:
bb represents homozygous recessive individual
Bb represents heterozygous dominant individual
RNA can be the genetic material of ______ like bacteria and Archaea
(Hint - type of cell)
Earth's atmosphere blocks much of the light that astronomers need to observe distant stars. To get around this problem, nasa put a powerful telescope-.
The majority of the light light astronomers use to study far-off stars is blocked by the Earth's atmosphere. NASA installed a parabolic dish in orbit around the planet to circumvent this issue.
Do you take a breath of the air?arbitrary fact The atmosphere of the Earth is where we find the oxygen we breathe. Did you know that the atmosphere that makes up the coating of air we breathe could be as thin as the apple's skin if the planet were an apple?
The composition of the atmosphereAbout 78% of the gases in the Earth's atmosphere are nitrogen, 21% are oxygen, 0.9 % are argon, and 0.1 % are other gases. The other 0.1 percent of gases includes trace quantities of neon, water vapor, methane, carbon dioxide, and methane.
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Which is the best definition of activation energy?
O the energy required to end a chemical reaction
O the energy required to bind a substrate to an active site
• the energy required to form or break the bonds of reactant molecules
• the energy required to re-form bonds in product moleculesp
Answer:
Explanation:
The best definition of activation energy is: the energy required to form or break the bonds of reactant molecules. Activation energy is the minimum amount of energy required for a chemical reaction to occur by breaking the bonds of reactant molecules, enabling them to react and form product molecules. The activation energy is determined by the energy difference between the reactants and the activated complex (a high-energy intermediate state), and it affects the rate of the chemical reaction.
Which of the following shows an unsaturated fatty acid?H-CHH-CHA.H-CHHC-HOGOHΗ Η Ο-C-C-0-HHS-B.1HN-HHHc=0онCH2C.CH2DELLCH2CH21NH2HHC--HCHO D.HCH-CHO=OонSUBMIT
An unsaturated fatty acid characterizes by the presence of a double bound between two carbon atoms. If the fatty acid had only simple bounds between their C atoms, it would be a saturated fatty acid. The correct answer, then, is the one where we can see that double bond between the carbon atoms, or the final one answer shown in the picture, the D option.
What is true about the cells that make up a person’s body ?
Answer:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
Explanation:
Define adaptations and explain how populations become better adapted over time.
Adaption is a change or the process of change by which an organism or species becomes better suited to its environment.
Explanation:
Adaptations develop when certain variations or differences in a population help some members survive better than others
1. In what two forms is carbon found in rocks?
2. what is the effect of deforestation and burning of coal and oil on carbon cycling?
Answer: 1. Carbonate Rocks
2. The greenhouse effect is the result of deforestation wherein there are no trees or forest to process carbon thereby resulting in the accumulation of carbon in the atmosphere. The burning of fossil fuels, on the other hand, results in the rapid release of carbon thereby accumulating in the atmosphere.
Explanation:
Study the image, which describes how rapid changes in weather conditions occur.
How rapid changes in weather conditions occur. Arrow labeled Direction of frontal movement points right toward Cold front map symbol. Arrow labeled Rising warm air in front of cold front points from cold front to sky. Also labeled are: Development of clouds because of upward movement of warm air, and Advancing cold air behind cold front.
Based on the arrows, what does the image represent?
Air masses are barely moving.
Air masses are colliding with each other.
Jet streams are forming in the upper atmosphere.
Weather conditions are remaining steady and unchanged.
The image represents air masses colliding with each other, leading to rapid changes in weather conditions.
The image represents the process of rapid changes in weather conditions occurring. The arrows in the image indicate various elements and phenomena related to these changes.
At the top, the final answer is that the image represents "Air masses are colliding with each other."
1. The arrow labeled "Direction of frontal movement" points right toward the "Cold front" map symbol. This indicates the movement of a cold front.
2. The arrow labeled "Rising warm air in front of cold front" points from the cold front upward into the sky. This signifies the upward movement of warm air.
3. The image also shows the development of clouds due to the upward movement of warm air. This indicates the presence of moisture in the atmosphere.
4. Finally, the image depicts advancing cold air behind the cold front, indicated by an arrow. This cold air is moving in the direction of the warm air.
Putting all these elements together, we can conclude that the image represents air masses colliding with each other. The cold front is advancing and pushing against the warm air, leading to the formation of clouds and changes in weather conditions. This collision between air masses often results in rapid changes in weather patterns, such as storms, rain, or temperature fluctuations.
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Why is it important for cold water and warm water to replace each other?
The water molecules begin to move around more quickly when it warms up. They distance themselves from one another when they collide.Due to the larger distance between the molecules in hot water, it has fewer molecules and is slightly lighter than cold water.
What cold water and warm water to replace each other?Water that is room temperature works better to quench your thirst. Your body reacts differently to warm and cold water, yet neither has any negative effects on you.
Therefore, it's up to you whether you choose to drink your water cold or at room temperature.
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write types of cellular respiration and their function?
Answer:
There are 2 types of cellular respiration i)Aerobic respiration
ii)Anaerobic respiration
Explanation:
i)Aerobic respiration: is the chemical reactions in the cells that use oxygen to break down food molecules to release energy. Its complete oxidation process that releases more energy (2830 $ J). The word equation of aerobic respiration is:-
glucose + oxygen------> carbon dioxide + water + energy.
ii) Anaerobic respiration: is the chemical reactions in cells that break down food to release energy without using oxygen. Its partial (incomplete) oxidation process that release a few energy (188 $ J) The word equation of anaerobic respiration in human muscles:-
glucose-----> lactic acid
The word equation of anaerobic respiration in yeast:-
glucose yeast alcohol + carbon dioxide
------->
What is the Mohorovičić discontinuity?
Answer:the boundary between the crust and the mantle
Explanation:
The division separating the crust from the mantle is known as the Mohorovicic Discontinuity, or "Moho." Its position is shown by the red line on the earth's model. In geology, a surface at which seismic waves change velocity is referred to as a "discontinuity."
What is Mohorovicic Discontinuity?Between the crust and the mantle lies a region known as the Mohorovicic Discontinuity, or "Moho." Its position is shown by the red line in the diagram. The term "discontinuity" in geology refers to a surface where seismic waves alter velocity.
One of these surfaces may be found at a depth of 8 kilometers on average beneath the ocean floor and 32 kilometers on average beneath the continents. Seismic waves speed up near this discontinuity. The Mohorovicic Discontinuity—commonly abbreviated as "Moho"—is the name of this surface.
Andrija Mohorovicic, a seismologist from Croatia, found the Mohorovicic Discontinuity in 1909. Mohorovicic came to understand that the density of the material a seismic wave is passing through affects its velocity. He explained the acceleration of seismic waves he had seen in the Earth's crust as a change in the Earth's composition. A deeper layer of material with a higher density must be the source of the acceleration.
Therefore, the division separating the crust from the mantle is known as the Mohorovicic Discontinuity, or "Moho."
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Which forest biome has year-round
precipitation in many forms, is very
diverse with deciduous trees,
flowering trees, and shrubs, and
abundant growth in spring?
A. Temperate forest
B. Coniferous forest
C. Tropical rainforest
D. Tropical dry forest
Answer:
Due to their global position, temperate forests generally receive about 75-150 cm of precipitation every year.
Explanation:
(That's a lot, second only to the Tropics).
effect of water pollution in 5 points
Write your question here. Be sure to include what you will be testing and how you will measure it. In
the first question given in the example list, the amount of erosion is what you are measuring (the
dependent variable), and the amount of water is what you will be testing (independent variable).
Answer:
What is the effect of water flow on soil erosion and how will it be measured?
Do plants grow taller in different amounts of sunlight?
I would test this by growing plants in different amounts of sunlight and measuring their height over time. The amount of sunlight would be the independent variable, and the height of the plants would be the dependent variable.
I would set up my experiment in a controlled environment, such as a greenhouse. I would plant the same type of plant in each pot, and I would water them all equally. I would then vary the amount of sunlight that each pot received. For example, I could put one pot in full sunlight, one pot in partial sunlight, and one pot in shade.
I would measure the height of the plants every week for a period of several weeks. At the end of the experiment, I would compare the heights of the plants in each pot to see if there was a difference. If the plants that received more sunlight were taller than the plants that received less sunlight, then I could conclude that sunlight affects plant growth. However, if there was no difference in the heights of the plants, then I would conclude that sunlight does not affect plant growth.
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Based on the weathering patterns you see what rock type is most likely shown below?
A Granite
B. Sandstone
C Limestone
D Shale
Answer: A granite
Explanation:
Mount Kilauea is an active volcano found
on one of the Hawaiian Islands. Looking at
the image to the right, how do you think the
four systems are interacting with one
another?
Yes the four systems are interacting with one another during the eruption of Mount Kilauea in Hawaiian Islands.
How does the four systems interact?The geosphere: This refers to the solid part of the earth, including the rocks, magma, and crust. In the case of a volcano like Mount Kilauea, magma rises from the mantle and collects in a magma chamber beneath the surface, which eventually erupts through the volcanic vent.
The hydrosphere: This refers to the water on earth, including oceans, lakes, and groundwater. In the case of Mount Kilauea, water from rain and underground sources can seep into the ground, interact with hot rock and magma, and create steam which may contribute to explosive eruptions.
The atmosphere: This refers to the layer of gases surrounding the earth, including air, clouds, and weather patterns. During volcanic eruptions, gases and ash are released into the atmosphere which can affect air quality and climate.
The biosphere: This refers to all living things on earth, including plants, animals, and humans. Volcanic eruptions can have a significant impact on the biosphere by destroying habitats, creating new landforms, and altering soil and water quality.
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When a happened new substances are formed
Answer:
Chemical change
Explanation:
In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
What powers the carbon cycle?
Answer:
\( \: \)
Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
Answer:
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone. Along with the nitrogen cycle and the water cycle, the carbon cycle comprises a sequence of events that are key to make Earth capable of sustaining life. It describes the movement of carbon as it is recycled and reused throughout the biosphere, as well as long-term processes of carbon sequestration to and release from carbon sinks. Carbon sinks in the land and the ocean each currently take up about one-quarter of anthropogenic carbon emissions each year.
Explanation:
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Why there were no clear zones for using LB media with 1% olive oil for screening lipilytic bacteria
The reason for the clear zone may be that there is Insufficient lipolytic activity.
Why the clear zone?The absence of clear zones when using LB media with 1% olive oil for screening lipolytic bacteria could be due to Insufficient lipolytic activity.
Enzymes called lipases, which are produced by lipolytic bacteria, break down fats and oils. It's possible that the bacteria utilized in the experiment won't create lipases or have poor lipolytic activity, which would prevent them from efficiently hydrolyzing the olive oil in the media. There wouldn't be any observable clearing or lipid hydrolysis zones as a result.
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how are scientists taking advantage of DNA sequences to do incredible things?
The advantage of DNA sequences is that Whole-genome sequencing can detect single nucleotide variants, insertions/deletions, copy number changes, and large structural variants.
Due to recent technological innovations, the latest genome sequencers can perform whole-genome sequencing more efficiently than ever.
Genome sequencing has the power to revolutionize food security and sustainable agriculture including food safety, animal, plant, and public health, reducing the risks from disease outbreaks and improving agriculture through effective plant and animal breeding.
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What are the major features of the moons surface
The Moon's surface is characterized by several major features that are observable from Earth and have been studied in detail through lunar missions. Some of the prominent features of the Moon's surface include:
Impact Craters: The Moon's surface is heavily cratered due to billions of years of impacts from asteroids, comets, and meteoroids. Impact craters come in various sizes, ranging from small to enormous, and they preserve evidence of the Moon's violent history. Some well-known craters include Tycho, Copernicus, and Kepler.
Rilles: These are long, narrow depressions or channels found on the lunar surface. Rilles can be sinuous, resembling dried riverbeds, or straight. They are thought to be formed by ancient lava flows or by the collapse of underground lava tubes.
Regolith: The Moon's surface is covered by a layer of loose, fragmented material known as regolith. It is composed of fine dust, small rocks, and larger boulders. The regolith is a result of billions of years of impact processes and micrometeorite bombardment.
Lunar Highlands Massifs: These are large mountains or massifs found within the lunar highlands. They are formed by the uplift and compression of crustal rocks during the Moon's early history. Notable examples include the Montes Apenninus and the Montes Carpatus.
Lunar Swirls: These are unique, bright patterns or streaks seen on the Moon's surface. Lunar swirls are associated with localized magnetic fields and are thought to be caused by the interaction of the Moon's surface with the solar wind.
Lunar Maria Domed Volcanoes: These are small, rounded volcanic features found in some maria. They are believed to have formed when magma pushed up from beneath the surface but did not erupt explosively. These domes often have smooth surfaces and can be several kilometers in diameter.
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Match the letter on the diagram with the appropriate term.
Assume that a population of 50
individuals has the following numbers
of genotypes for a gene with two
alleles, B and b: BB = 30, Bb = 10,
and bb = 10. Calculate the
frequencies of the two alleles in the
bopulation's gene pool.
The population's gene pool, the frequency of the B allele is 0.7 (or 70%) and the frequency of the b allele is 0.3 (or 30%).
To calculate the frequencies of the two alleles (B and b) in the population's gene pool, we can use the allele frequency formula. The allele frequency is the proportion of a specific allele within a population.
Given the genotypes BB = 30, Bb = 10, and bb = 10, we can determine the number of alleles in the population as follows:
Number of B alleles = 2 * (number of BB genotypes) + (number of Bb genotypes)
= 2 * 30 + 10
= 60 + 10
= 70
Number of b alleles = 2 * (number of bb genotypes) + (number of Bb genotypes)
= 2 * 10 + 10
= 20 + 10
= 30
Next, we can calculate the frequencies of the two alleles:
Frequency of B allele = (Number of B alleles) / (Total number of alleles)
= 70 / (70 + 30)
= 70 / 100
= 0.7
Frequency of b allele = (Number of b alleles) / (Total number of alleles)
= 30 / (70 + 30)
= 30 / 100
= 0.3
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Every year thousands of people in the UK have heart attacks.
A heart attack is caused when the heart muscle cells do not get enough oxygen, causing the cells to die.
Statins and stents are two treatments used to reduce the risk of someone having a heart attack.
Evaluate the use of statins compared with the use of a stent to reduce the risk of a heart attack. [6 marks]
Statins lower cholesterol and prevent plaque buildup, while stents restore blood flow. Statins are preventive, stents are reactive; both reduce heart attack risk (option b).
Statins are medications that help reduce cholesterol levels and prevent plaque buildup in the arteries, thus decreasing the risk of heart attacks.
They are typically used as a preventive measure for individuals with high cholesterol or existing heart issues. Stents, on the other hand, are small mesh tubes inserted into narrowed or blocked arteries to restore blood flow.
They are a reactive treatment, used after detecting significant artery blockage or following a heart attack.
Both statins and stents have their own advantages in reducing heart attack risk, with statins acting as a preventive measure and stents providing immediate relief to blocked arteries.
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why protozans are called ammonotelic
Answer:the process of excreting nitrogenous waste in the form of ammonia
Explanation:
The domain __________________________________ is made up of prokaryotes that usually have a cell wall and the at usually reproduce by cell division.