What causes the moist air of tropical rainforests?
A) warm air rising at the equator, cooling and condensing, and falling to Earth
B) warm air sinking, moving to the equator, and raining
C) cool air rising, evaporating, and forming cloud cover
D) cool air sinking, condensing, and falling as rain
A
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Amino acids are the building blocks for
a. proteins. b. carbohydrates. c. nucleic acids. d. fats. e. steroids.
List some of the applications of DNA sequencing. What will be an ideal response?
Which of the following infectious particles is most susceptible to damage?
A) naked capsid virus B) enveloped virus C) prions D) bacteriophage E) both naked capsid viruses and prions
The success of altruistic behavior hinges on the ability to distinguish kin from unrelated individuals. Hamilton proposed that an allele that produces a distinctive trait (i.e
, the greenbeard effect), along with altruistic behavior directed at the bearers of this trait, could drive such an altruistic allele to high frequencies in a population. This scenario has been discovered and studied in ________. A) black-tailed prairie dogs B) red squirrels C) Belding's ground squirrel D) slime molds