Which variable was most likely measure and should be placed on the Y axis of the graph shown to represent The rate of photosynthesis in which explanation provide accurately describes the role of the variable in the cycling of matter during the photosynthesis?

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

Which feature of a human community is similar to a niche in a biological community

Pulmonary arteries carry highly oxygenated blood. true or false?