2. Explain environmental interest and contributions of each of the following individuals. a. George Perkins Marsh
b. John Muir
c. Theodore Roosevelt
d. Gifford Pinchot
e. Aldo Leopold
f. Rachel Carson
g. Margaret Mead

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.