Which relationship between the two species listed below would be mutually beneficial? a. a plant leaf and a caterpillar b. a flowering plant and a bee c. a fish and a leech d. a dog and a tick

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Why do mountaineers become breathless as they reach high altitudes