The physical result of a gene expressed or the physical make-up of an individual is called what?

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

What is the primary goal of human communities?