Chemical weathering:

uses temperature changes to break rocks
is always slower than physical weathering
transports silt and rock to other places
changes rocks on a molecular level
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The onion skin cells doesn't have chloroplasts because the bulb of the onion grows underground.

Chloroplasts produce energy through photosynthesis and oxygen-release processes, which sustain plant growth and crop yield. As such, chloroplasts are responsible for the biosynthesis of active compounds such as amino acids.

The most important function of the chloroplast is to synthesise food by the process of photosynthesis. Absorbs light energy and converts it into chemical energy. Chloroplast has a structure called chlorophyll which functions by trapping the solar energy.

The two main functions of chloroplasts are to produce food (glucose) during photosynthesis, and to store food energy. Most leaves appear green because the chloroplasts in plant cells give plants their green color.

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Answer:

For question 18 i think the answer is (B) becasue the cell membrane is the wall of a cell and so in a bank it would be the security guard. Then for question 17 its either B or C.

Explanation:

Answer:

C. Phosphorus

Explanation:

hope this helped :)

Don Huberts of ShellHydrogen was referring to the fact that the world's dependency on fossil fuels will not end because we have run out of these resources.

.

Just as the Stone Age ended due to the emergence of new technologies, the world's reliance on fossil fuels will end because of the development of alternative energy sources. Huberts believes that we must find new and innovative ways to produce energy in order to reduce our dependance on non-renewable resources. This shift is already happening, with countries and companies investing in wind, solar, and other clean energy sources. Huberts' statement serves as a call to action for individuals, businesses, and governments to prioritize the development of renewable energy sources in order to reduce our impact on the environment and ensure a sustainable future. By investing in new technologies and embracing alternative energy sources, we can reduce our reliance on fossil fuels and create a better world for future generations.

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Answer:

TAAGCGTA

Explanation:

Answer: I think the first one is d and the second is a

Explanation:

Answer:

A metallic bond of copper atoms with metallic bond of tin atoms to form metallic bond.

Explanation:

Metallic bond is a type of bond that is formed between positively charged atoms in which there is sharing of electrons between them.

Metallic bonds are formed between metal atoms. When metal atoms unite, they share electrons among themselves and each one of them has valence electrons.

Bronze is an alloy of metals and it consist of copper and tin which makes them to be bonded by metallic bond.

Answer: Metallic bonds are found in bronze between atoms of copper and tin. The atoms of copper, a METAL, bond with the atoms of tin, a METAL, to form metallic bonds.

Answer:

It would be the cell theory

Cell theory is the basic concept of biology includes the idea that new cells can be produced only by the division of existing cells.

In biology, cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.

A component of the cell theory is that all living things are composed of one or more cells. A component of the cell theory is that the cell is the basic unit of life. A component of the cell theory is that all new cells arise from existing cells.

All known living things are made up of cells. The cell is structural & functional unit of all living things. All cells come from pre-existing cells by division. (Spontaneous Generation does not occur).

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Answer:

Ribosomes

Explanation:

Answer:

The ribosomes.

Explanation:

Answer:

globular cluster

Explanation:

Answer:

Binary Star System

Explanation:

I hope this helps!

The macromolecule involved in how hemophilia is passed is DNA, specifically the genes carried on the X chromosome. The inheritance of hemophilia follows a pattern influenced by the presence or absence of the hemophilia gene on the X chromosome.

The macromolecule involved in how hemophilia is passed is DNA, specifically the genetic material carried on the X chromosome.

Hemophilia is an inherited bleeding disorder caused by a mutation in one of the genes responsible for producing clotting factors in the blood. The genes involved in hemophilia, such as the F8 gene (hemophilia A) or F9 gene (hemophilia B), are located on the X chromosome.

The X chromosome is one of the two sex chromosomes, with females having two copies (XX) and males having one copy (XY). Since hemophilia is a recessive trait, it typically affects males more often than females. This is because if a male inherits a defective X chromosome carrying the hemophilia gene, he will develop the disorder since he does not have a second X chromosome to compensate for the mutation.

In females, who have two X chromosomes, hemophilia can be passed on if they inherit a defective X chromosome from both parents. These females are carriers of the hemophilia gene and may not exhibit symptoms themselves but can pass the mutation to their offspring.

The inheritance of hemophilia follows a specific pattern, with affected males having an X chromosome with the hemophilia gene and unaffected males having a normal X chromosome. Female carriers have one normal X chromosome and one X chromosome with the hemophilia gene.

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The correction needed in the statement is that cooled magma becomes igneous rock, instead of metamorphic (Option A).

The independent variable are the different types of sugar solutions: maltose, glucose, and sucrose.

A variable is any factor in an experiment that can be manipulated, controlled for, or measured.

There are three types of variables in an experiment:

An independent variable is the variable that stands alone and is not affected  by other factors in the experiment. Changes in this variable results in changes in the dependent variable.

In the given experiment, the independent variable are the different types of sugars.

In conclusion, changes done to the independent variable results in changes in the dependent variable.

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The given statement " Algae indeed produce energy-rich carbon compounds through photosynthesis". is True because  Photosynthesis is a vital process that occurs in the chloroplasts of algae cells.

During photosynthesis, algae capture light energy using pigments like chlorophyll and convert it into chemical energy. They utilize this energy to break down water molecules, releasing oxygen as a byproduct, and incorporating carbon dioxide from the surrounding environment. Through a series of enzymatic reactions, algae synthesize glucose, a high-energy carbon compound.

Glucose serves as a primary source of energy for algae, enabling them to carry out essential metabolic processes and sustain their growth. Additionally, algae can convert excess glucose into other energy-rich carbon compounds, such as lipids and starches, which serve as energy storage molecules. These compounds can be used during periods of limited sunlight or nutrient availability.

Overall, algae's ability to generate energy-rich carbon compounds through photosynthesis makes them an important component of aquatic ecosystems and potential sources for renewable energy production and biofuel development.

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Answer:

what are the options...?

This is the complete question

Which of the following is not considered a sustainable development strategy for management of earths resources?A. Contour plowingB. Desertification C. Crop rotationD. Selective harvesting of tree

The following is NOT considered a sustainable-development strategy for management of Earth’s resources is Selective harvesting of trees.

If a society wants to make use of materials which can be recycled, then it has good plans for building a sustainable future for itself as it would be self-dependent and not have to rely on other nations.

With this in mind, if a country wants to build a sustainable future for itself, then it would have to use local resources more because this would increase self-sufficiency and reduce dependency.

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Answer:

A. Activation energy with a catalyst

Answer:

A

Explanation:

Answer:

Gene therapy is the process or replacing mutated genes with normal genes in an attempt to heal diseases by correcting the functional code of the gene. Mutated genes can cause genetic disorders. Transformation and transfection are the two methods used to insert a normal gene into an organism. The process of transformation occurs in a laboratory. Cells are grown in the lab and then introduced to DNA that carries the gene of interest. Transfection uses a virus to introduce the gene of interest to the host cells.

Gene therapy is a relatively new biotechnology. It is very expensive and much more research needs to be done before it is perfected. Gene therapy has had the best results in the treatment of cancer. One of the ways gene therapy is used in cancer treatment is by inserting a gene that is more sensitive to treatments such as chemotherapy and radiation.tion:

Gene therapy can be a social issue by the process or replacing muted genes with normal genes while attempting to heal a sickness of a bad function in one. Mutated genes can cause genetic disorders. Transformation and transfection are the two methods used to insert a normal gene into an organism. The process of transformation occurs in a laboratory. Cells are grown in the lab and then introduced to DNA that carries the gene of interest. Transfection uses a virus to introduce the gene of interest to the host cells.Gene therapy is a new biotechnology. It is very expensive and much more research needs to be done before it is perfected. Gene therapy has had the best results in the treatment of cancer. By adding a gene that can handle radition theropy you can go through it without a problem.

hi <3

there would be 2 electrons. each atom shares an electron each so in a single covalent bond, there would be 2 electrons

hope this helps :)

There are two electrons in a covalent bond.

A covalent bond can be meant of as a 'shared pair' of electrons, so there are 2 electrons in each bond. This means that a double bond will have 4 electrons in the space between the bonded nuclei, and a triple bond will have 6.

Hope it helps you...

(Answered by Benjemin)

Answer:Extrusive rock, any rock derived from magma (molten silicate material) that was ... By contrast, intrusive rocks are formed from magma that was forced into older rocks at ... Encyclopaedia Britannica's editors oversee subject areas in which they have ... from intrusive rocks on the basis of their texture and mineral composition

Explanation:

The presence of a layer of extrusive rocks is due to a single volcanic eruption and its presence in the middle of a rock formation may be because these rocks are younger than the surrounding rock formations.

The presence of a layer of extrusive rocks in the middle of a rock formation refers to the geological history of the area. These rocks are formed from lava that has been erupted from a volcano and cooled quickly on the Earth's surface followed by the cooling at the surface of the Earth. This suggests that a volcanic event has occurred in the area.

When a volcanic eruption occurs, lava is ejected from the volcano and flows onto the Earth's surface followed by its solidification into extrusive rocks which have fine-grained texture.

The presence of extrusive rocks in the middle of a rock formation may be due to a single volcanic eruption or these rocks are often younger than the surrounding rock formations.

Therefore, the presence of extrusive rocks is due to a single volcanic eruption and may be younger than the surrounding rock formations.

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Oligopotent stem cells can differentiate into several cell types. A myeloid stem cell is an example that can divide into white blood cells.

A biophilia ecosystem service is the sensation of being among a forest of trees, some of the largest and oldest organisms to have ever existed on Earth. Edward O. Wilson, a biologist and naturalist, invented the word "biophilia" to explain how people are inherently drawn to the natural world.

The advantages individuals experience from being in a natural setting include bettering their physical and mental health, increasing their creativity and productivity, and feeling more content.

These advantages are referred to as "biophilia ecosystem services." In this aspect, trees are especially crucial since they offer a range of ecosystem services including clean air, water filtration, and wildlife habitat.

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Answer:

Yes, correct.

Explanation:

Identification keys used to identify unknown organisms and based on successive choices between couplet alternatives are known as dichotomous keys.

An instrument known as a dichotomous key is used to recognize living things or inanimate objects found in the natural world, such as plants, animals, or rocks.

A key is another type of taxonomic aid that is utilized in the process of identifying organisms like plants and animals on the basis of their similarities and differences. The dichotomous keys are determined by the contrasting characters that are often arranged in a pair known as a couplet. This type of key also goes by the name couplet.

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Answer:

identify the variables

Explanation:

control:type of lemon used

dependent:whether apple slice turns brown at pH>2

independent:pH value