Many species have been exterminated by:
A) prehistoric human hunters
B) periodic burning by prehistoric humans
C) human alteration of habitat
D) ALL of these
Correct Answer:
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Q39: Biogeochemical cycles include:
A)rock cycle and hydrologic cycle
B)disaster
Q40: When new land forms and plant and
Q41: On the illustration, letter B shows:
Q42: On the illustration, letter D shows:
Q43: On the illustration, letter C is:
Q45: On the illustration, letter A is:
Q46: On the illustration, letter E is:
Q47: On the illustration, letter B is:
Q48: The greatest threats to biodiversity are caused
Q49: The picture shows a live oak of
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