All living things of the Earth system constitute the:

a. atmosphere
b. lithosphere
c. hydrosphere
d. biosphere


d

Environmental & Atmospheric Sciences

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Since 1900, and especially since 1950, the incidence of infectious diseases and the death rates from such disease has been greatly reduced

Recalling discussions from previous chapters, what other significant events have occurred since about 1950? Do you think these events are correlated? If so, what process is driving it? What will be an ideal response

Environmental & Atmospheric Sciences

If the tangential velocity of the Moon about Earth slowed to zero, the Moon would

A. crash into Earth. B. spiral away from Earth C. continue in a straight-line path. D. slow.

Environmental & Atmospheric Sciences

Which of the following is NOT true about our Solar System?

A) It is some 30,000 lightyears from Sagittarius A*, the black hole at the center of the Milky Way. B) It is located in the approximate center of the Milky Way Galaxy. C) It is embedded in the the Orion Spur of the Sagittarius Arm of the Milky Way Galaxy. D) It contains 8 planets and 4 dwarf planets.

Environmental & Atmospheric Sciences

The deepest well that has ever been drilled on the earth is ________ deep, about 1/500th of the radius of the earth

A) 40.5 km B) 31.4 km C) 12.3 km D) 20.7 km

Environmental & Atmospheric Sciences