________% of Earth's land area is currently covered by forest
A) Less than 5
B) 40
C) 30
D) 5-10
E) 50
C
Environmental & Atmospheric Sciences
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The salinity of seawater remains constant because
A) salts are removed from seawater about as fast as they are deposited. B) salts are included in the molecular formula of seawater. C) salts no longer form in the ocean. D) salinity measurement technology is unreliable.
Environmental & Atmospheric Sciences
An anoxic atmosphere was needed for life to first form on Earth
a. True b. False
Environmental & Atmospheric Sciences
Summarize the main stages of the demographic transition
What will be an ideal response?
Environmental & Atmospheric Sciences
________ was (were) not partially covered with substantial glacial ice during the Pleistocene epoch
A) The Andes Mountains of South America B) Europe C) North America D) Australia E) Antarctica
Environmental & Atmospheric Sciences