Use the drop-down menus below to identify the organ(s) that is/are responsible for each function of the excretory system.
releases excess heat from body
reabsorb water to maintain normal composition and volume of blood
and fluids and prevent dehydration
excrete wastes that balance salt

What would be the most likely result if the ph of the stomach were increased to 5

What is the main fuel source for the work of the cell

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.