The majority of the elements essential to life are found in what part of the periodic table?
A) The top third
B) The middle third
C) The bottom third
D) Evenly distributed throughout the periodic table
A
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A rain shadow is created when ____
a. cool air descends and replaces warm air over land through onshore flow b. wind direction reverses seasonally c. cool air descends and replaces warm air over the sea through offshore flow d. dry air on the windward side rises and absorbs water on the leeward side, such that the leeward side remains dry e. mountains force air to sink and absorb water on the windward side, causing the leeward side of the mountains to receive excessive rainfall
One job of the nuclear membrane is to
A. control entry to and exit from the nucleus. B. produce enzymes. C. digest chromosomes. D. contain excess water.
What is the age structure diagram for a population that has a birthrate higher than its death rate and larger population in prereproductive ages than in reproductive and postreproductive ages?
A. This population can expect to see a pyramid-shaped diagram that will cause the population to grow in the near future. B. This population can expect to see a pyramid-shaped diagram that will cause the population to decrease in the future. C. This population can expect to see a bell-shaped diagram that will cause the population to grow in the future. D. This population can expect to move into a logistic growth curve in the near future. E. This population can expect to see an urn-shaped diagram that will cause the population to grow in the future.
All of the following are fuels produced by microorganisms EXCEPT
A) cellulose. B) ethanol. C) hydrogen. D) methane. E) oil from algae.