Of the following, the most important cause of deforestation is ________

A) fires caused by lightening B) city expansion
C) farming D) continental drift


Answer: C

Biology & Microbiology

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Which of these fatty acids is most likely to be a liquid at room temperature?



a. stearic acid
b. trans oleic acid
c. cis oleic acid
d. both oleic acids

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Resource partitioning is the result of ____

a. parasitism b. mutualism c. competition d. predation e. commensalism

Biology & Microbiology

Barringer Crater in Arizona was formed when a

300,000-ton asteroid slammed into Earth 50,000 years ago. Which of the following is true about this event? a. It hit so early that it had little influence on the history of life. b. This one produced about 150 times the energy of the bomb that hit Hiroshima. c. Its impact produced a minor crater. d. Scientists recently disproved that an asteroid impacted our planet just prior to the mass extinctions at the K-T boundary. e. An asteroid impact releases only minor amounts of energy.

Biology & Microbiology

What does the sliding filament model describe during muscle contraction?

Biology & Microbiology