Answer:
I think this is 2 because there would have been bigger predators in the ocean vs. a lake
Active transport is the homeostatic process that moves particles against a concentration gradient.
Answer:
A testable question is one that can be answered by designing and conducting an experiment. The answers to a testable question can be observed and measured. Hypothesis- a testable explanation of an observation. A hypothesis is NOT just an educated guess about what you think will happen.