Explain how animals get their needed amount of nitrogen?

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

What are the student's observations and inferences before he starts his investigation?

Ecology can best be described as the study of what