Which of the following was not the location of an early civilization?
A. the Huang He (Yellow River) of China
B. coastal Peru
C. Mesopotamia
D. Northeastern United States
D. Northeastern United States
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Explain how ozone can have both a beneficial and a detrimental role in the Earth's atmosphere.
What will be an ideal response?
The Marine Plastic Pollution and Control Act ________.
A. is enforced by the United Nations Ocean patrol B. has eliminated the plastic trash problem in the oceans C. prohibits dumping plastic debris in coastal oceans only D. prohibits dumping plastic debris everywhere in the oceans E. prohibits dumping plastic debris everywhere in the oceans and is enforced by the United Nations Ocean patrol
The "one-child policy" has produced generations fo Chinese who do not have certain relatives. Which of these DO they have?
What will be an ideal response?
Which of the following is not a reason earthworms increase the fertility of the soils in which they reside?
A) Formation of aggregate soil particles B) Mixing of leaf litter C) Increased nitrification D) Increase of soil nutrients E) Stimulation by plowing for agriculture