Create a model or image of the atmosphere. Use a different color to indicate each layer and note a special feature of each. You can use an online presentation or drawing program, or construct a model out of styrofoam, poster board, blocks of wood or other materials. Provide a legend telling which layer each color represents.

Rank the three variables in terms of how strongly they affect the "species" composition of the bacterial communities. place the variable with the weakest effect on the left and the variable with the strongest effect on the right.

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.

Monitor and apply fix up strategies