When were wild plants and animals domesticated by native Latin Americans?
A) 10,000 years ago
B) 20,000 years ago
C) 1,000 years ago
D) 5,000 years ago
E) 500 years ago
Answer: A
You might also like to view...
The forces that hold atoms and ions together to form molecules are:
1.Chemical bonds. 2.Negative bonds. 3.Positive bonds. 4.Neutral bonds.
Some people believe the sun has become hotter and is responsible for global warming. Which observation shows that claim to be false?
A. The stratosphere cools while the troposphere warms. B. The surface temperature of the sun is projected to increase. C. Air currents at high altitude cool the sun. D. Ocean currents increase the water's ability to absorb heat. E. Air currents at low altitude cool the sun.
Carbon-14 is created in the atmosphere by the nuclear reaction of neutron from the cosmic rays and ________ in the atmosphere.
A. hydrogen B. oxygen C. dust D. nitrogen E. water vapor
The central United States is a very good air mass source region
a. True b. False