Plastic is made from ____.
A. organic chemicals derived from oil and natural gas
B. melted silica sand grains
C. byproducts of coal mining
D. extraction of inorganic solids from oil and natural gas
E. leachates produced by bioenzymes
Answer: A
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As the temperature of an object ____, the intensity of the radiation emitted by the object ____
A) increases; increases B) increases; decreases C) decreases; stays the same D) decreases; increases
Continuing political problems in Sudan have resulted in food shortages
Indicate whether the statement is true or false
The distribution of many aquatic organisms is determined largely by salinity.
Answer the following statement true (T) or false (F)
What are the characteristics of a maritime tropical air mass?
A. high humidity, high temperature B. low humidity, low temperature C. low humidity, high temperature D. high humidity, low temperature