What is meant by natural variation in living things? 1.Different species have different attributes.
2.Different individuals within a species have variation because they may express
different alleles for the same traits.
3.All the possible trait variations of a single population
4.The number of organisms a given area will support.

not sure if this what   you'r looking for would be percent composition

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.