Environmental differences within ecosystems are generally caused by

What happens when the cell copies its chromosomes

What is the most appropriate method of gaining weight (muscle mass)

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs