Which of the following contributes most to promoting sustainability in an ecosystem?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Apair of fruit flies reproduces and has 1,000 offspring. all 1,000 of the offspring have the alleles gg. what is the most likely combination of alleles for each parent