What is species definition

Give the biological term for: structures that display characteristics of living organisms only within living cells

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

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