<span>Carbohydrates consist of monomers of carbon, hydrogen, and oxygen, while nucleic acids consist of monomers of a sugar, a phosphate group, and a nitrogenous base</span>
True!
A buffer is a solution that helps in resisting the change in the pH when a acid or base is added to it. Cells contain a lot of different organelle inside them. Each organelle performs a different kind of function and thus has a pH different from the cytoplasm, example mitochondria which has a pH lower than that of the cytoplasm. These organelle maintain a pH buffer within them to resist a change in the environment that will hamper the functioning of proteins in it. Cells like the organelle also maintain a pH buffer in their cytoplasm to resist changes in the pH level due to pH changes in the external environment. This is a way in which the cellular homeostasis takes place.
Genetic drift is a process in which allele frequencies within a population change by chance alone as a result of sampling error from generation to generation. Genetic drift is a random process that can lead to large changes in populations over a short period of time.
<span>Before urine leaves our bodies, it has to go through the urinary tract. This pathway includes the kidneys which contain the nephrons that filter waste from your blood. Upon passing through the kidneys, it travels to the bladder where it can be stored for a short period of time and thorough detoxification occurs. The urine then passes to the ureters, or tubes within the urinary tract, and is passed out towards the vagina or the penis of the body.<span>
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Answer:
C
Explanation: all the others are considered very important in determining a substance so they would also be important for the level of environmental risk