Eighty percent of the world's annual tonnage of all crops today is made up of approximately how many varieties of plant species?
A) 4
B) 18
C) 12
D) 22
Correct Answer:
Verified
Q39: Researcher Brian Hare found that dogs and
Q40: Which of the following is believed to
Q41: Dwellings during the Neolithic period commonly involved
Q42: Which of the following best describes typical
Q43: In the early farming community of Jericho,
Q45: Jericho was surrounded by:
A)a large moat
B)massive walls
C)mountain
Q46: Neolithic peoples were the first in human
Q47: Compared to Paleolithic and Mesolithic peoples, those
Q48: Domestication:
A)decreases productivity and increases instability
B)increases productivity and
Q49: The world's oldest shoe was found in
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