(Only answer it if you know the answers)

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

Why has two different alleles for the same trait?

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