Is salad, steak, and grapes, biotic

Which of the rock examples below is most likely to be metamorphic

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system