The process of movement of a particle in a solution from the region of higher concentration to the region of lower concentration across a membrane is called as concentration gradient.
For example: If we drop a few drop of dye in a glass of water, it will diffuse along a concentration gradient, i.e, the region where dye is found in highest concentration to the region where it is in lower concentration.
It will occur until the concentration of dye become uniform in all the direction in the glass of water.
A trait that gives an organism a reproductive advantage in the current environment
Explanation:
Adaptations are mutations that helps an organism, such as animals or plants to survive in its environment due to a reproductive advantage.
Adaptations may be structural or behavioral adaptations. Structural adaptations are features or the physical part of an organism that boosts its survival. Behavioral adaptations on the other hand, are responses made by an organism to help it survive or reproduce.
Answer: The whitefish embryo is a good place to look at mitosis because these cells are rapidly dividing as the fish embryo is growing. The onion root is also a good place because this is the area where the plant is growing.