You observed that species of clams near a sewage plant are exhibiting massive die-offs. You hypothesize that sewage runoff from the plant is causing the die-offs. What is your next step in the scientific method?
1) You come up with an additional hypothesis about clam survival and warm temperatures coming from the sewage plant
2) You create a theory about clam survival and sewage runoff
3) You do an experiment on clam survival and sewage runoff
4) You conclude that sewage must be killing the clams since the clams are dying near the sewage plant