Answer is hypertonic.
The ability of an extracellular solution to make water move into or out of a cell by osmosis is known as its tonicity. Tonicity is concern for all living things, especially in in organisms lacking cell wall, <em>Paramecium</em> is one such protozoan. It has specialized structures called contractile vacuoles. A contractile vacuole collects excess water from the cell and release it out, keeping the cell from lysing as it takes on water from extracellular environment which hypotonic (a lower osmolarity than the cell’s cytoplasm) as compared to hypertonic environment inside <em>Paramecium</em>.
Answer:
Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring. ... Individuals may mutate, but natural selection acts by shifting the characteristics of the population as a whole.
Explanation:
Answer:
The answer is C.
Explanation:
Decomposers feed on dead organisms like plants and animals.
All of the Above
The urinary system carries out essential bodily function that help to maintain the body.
Apart from the obvious function of excreting <span>nitrogenous wastes, it helps to maintain an acid-base </span>homeostasis, regulate electrolyte balance and even helps to control blood volume and pressure