Answer:
ocean productivity largely refers to the production of organic matter by "phytoplankton"plants suspended in the ocean most which are single - celled
Answer: A. Phenotype
Explanation:
Phenotype: the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
Genotypes produce phenotypes.
Well a theory is when a person comes up with something that they believe is to be true, and they work on projects and other things to show their thinking. theories won't always bee correct which helps us humans grow and come up with new ones
