What two processes fuel the carbon cycle? a) transpiration and transport b) photosynthesis and transport c) cellular respiration and transpiration d) cellular respiration and photosynthesis

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***

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