Which of the following is an organic molecule

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?