How much kidney filtrate is reabsorbed back into the vascular system?

Why should organisms reproduce more offspring than will survive? select all that apply.

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water

Describe the structure of amino acid, including what makes amino acids different from eachother