Which of the following statements is NOT true about
asteroids?
a. They have had little influence on the history of
life.
b. They do not emit light and are difficult to see.
c. Their impacts have produced craters visible in
satellite images.
d. One asteroid impacted our planet just prior to the
mass extinctions at the K-T boundary.
e. An asteroid impact releases an enormous
quantity of energy.
Answer: a
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The grouping or classification of species is termed
A. eukaryotism. B. prokaryotism. C. genus. D. kingdom. E. taxonomy.
Certain plants have been genetically modified to secrete citrate, which helps
A. make the phosphate in soils more soluble. B. plants make necessary micronutrients. C. reveal mineral deficiencies in a plant. D. make hydroponic growth possible. E. plants add metals to the soil in which they are growing.
Which specialized stem structure does not have nodes?
a. bulbs b. stolons c. corms d. tubers e. rhizomes
Kidney stones
a. are four times more likely to occur in men than women. b. usually do not cause symptoms. c. cause extreme pain when they enter the ureter. d. are formed when solutes that are dissolved in the urine come out of solution. e. fit all of these descriptions