The process in which two or more lighter elements combine to form a single heavier element is called
A. photodisintegration.
B. fission.
C. nucleosynthesis.
D. neutronization.
Answer: C
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Coal, natural gas, and oil are not considered renewable sources of biomass energy because they
A) were produced by photosynthesis. B) release carbon dioxide when burned. C) contribute to ozone destruction. D) were formed millions of years ago.
Which of the following is not something that erupts from composite volcanoes?
A) toxic gas B) fast-moving mudflows called lahars C) pyroclastics D) thin, silica-rich lava you could probably outrun
The yearly rate of tectonic plate movement is best measured in
A. meters. B. centimeters. C. kilometers.
Consider the ecology of the region in which you live. Which organisms are the primary producers, the primary consumers, the secondary consumers, and tertiary consumers?
What will be an ideal response?