In the accompanying figure, the process labeled as 3 illustrates an action that is reduced by greenhouse gas
accumulation. What is this action?
a. heat redirection to the surface
b. heat radiation into space
c. heat reflection into space
d. heat trapping on the surface
e. heat generation by the surface
b
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The formation of soil involves a combination of biological, chemical, and physical processes
Indicate whether the statement is true or false.
Which of the following statements about sister chromatids is TRUE? rev:
A. Sister chromatids are produced during mitosis. B. Sister chromatids are held together by complementary base pairing of DNA at the centromere. C. Sister chromatids are exact copies of each other and are formed just prior to cell division. D. After mitosis, sister chromatids contain the same genes, but they may have different alleles. E. All of these statements about sister chromatids are TRUE.
Population size declines when ________
a. the sum of births and immigration is less than the sum of deaths and emigration b. death rates are higher than birth rates c. immigration is higher than emigration d. the value for r is greater than 0
You are preparing a garden and want to provide the best environment for your plants. Which of the following would you add to the potting soil?
A. Mycorrhizae inoculant B. Coliform bacteria C. Sulfur oxidizers D. Bacteriophage