Answer:
A SOURCE OF ERROR BECAUSE IFTHERE ARE MISTAKES THEN THE INFO ISNT ACCURATE
Explanation:
MARK BRAINLEST PLEASE
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
If the allele frequency of a gene for brown fur is increasing from 15 to 25 percent, the population of the bears is evolving.
It helps homeostasis, by maintaining the shape of a cell depending on how much solute is outside of the cell and how much water is inside the cell, in an isotonic solution the size of the cell stays the same because the amount of water inside the cell is the exact same percentage of solute outside of the cell.
