Practice: Draw your own simple food web with the following organisms:
Grasses, hawk, mouse, snake, grasshopper, rabbit, squirrel, butterfly, frog, fox

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.