Which is an example of commensalism in the tropical rainforest? a. fleas live in the hair of a rabbit, making the rabbit ill. b. mosquitoes eat the blood of a sloth. c. algae live in a sloth's fur, giving it camouflage. d. a frog lives underneath a plant for protection.

Scientist have long study the earths climate by looking at which of the following? the earths orbit. the earths rock layers. the antarctic ice. the earths oceans.

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

The source of energy shown in the image is (renewable, non renewable, polluting) a drawback of building a dam is that (it will destroy ecosystems, it requires fossil fuels, it won’t be useful for irrigation)