Answer:when you need to replace cells that are old lost or broken
Explanation:
A genotype is a genetic structure of a cell that can be used to determine characteristics
From an area of high concentration to an area of low concentration.
Answer:
The right answer is D. The benthic zone
Explanation:
The limnetic and the littoral zone all get a lot of sunlight so there are a lot of plant life. The pelagic zone hosts a variety of plant species so this cannot be the correct answer. That leaves us with the benthic zone.
Benthic meaning inhabiting bottom areas or substrates. Plant life at the bottom is very scarce but there are a lot of insect species.
it allows for nutrients to come into the cell using passive tranport aka moving anything on a gradient without the use of energy (ATP).