Answer:Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
Answer:
The only mutations that matter to large-scale evolution are those that can be passed on to offspring . These occur in reproductive cells like eggs and sperm and are called germ line mutations . A single germ line mutation can have a range of effects : No change occurs in phenotype.
Explanation:
There are four groups of macromolecules. Carbohydrate, Protein, Nucleic acid, and Lipids. Each macromolecule is essential for the growth and formation of cells. Carbohydrates are used for energy and help build the structure of the cell wall. Proteins help build and regulate muscle and tissue. Nucleic acid transfers
and stores information. Lastly Lipids insulate your body and help produce hormones.
The answer is B.
I just took this test, and this was the answer! I hope it helps you more then the other answer XD
Answer:
Point mutations can cause serious changes to an organism if they change the way a protein works. A mutation in DNA alters the mRNA, which in turn can alter the amino acid chain. A base substitution may have three different effects on an organism's protein.
Explanation:
