Tropical rain forests occupy approximately ________ of the world's land area, but represent about ________ of Earth's species

A) 2%; 12% B) 7%; 50% C) 25%; 32% D) 12%; 65% E) 10%; 35%


B

Environmental & Atmospheric Sciences

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In an autoimmune disease,

A. the body makes too few immune cells. B. memory cells are made. C. immune cells are attacked by pathogens. D. immune cells attack the body's own cells.

Environmental & Atmospheric Sciences

Exhaled breath from your mouth in cold weather produces ____ fog

A) radiation B) frontal C) advection D) evaporation (mixing)

Environmental & Atmospheric Sciences

Granite and gabbro have a similar ________

A) composition B) course-grained texture C) fine-grained texture D) vesicular appearance

Environmental & Atmospheric Sciences

What characterizes the first stage (preindustrial) of the demographic transition model?

a. high birth rates and high death rates resulting in negligible population growth b. high birth rates and low death rates resulting in high population growth c. low birth rates and low death rates resulting in negligible population growth d. low birth rates and high death rates resulting in declining population growth e. high birth rates and low death rates resulting in declining population growth

Environmental & Atmospheric Sciences