Which two statements are true for the leading strand in dna?

What two fields of study provide the core information that is used to classify organisms?

24. how are vaccines used to keep people healthy?

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