Clay soils have smaller pores and hold considerably less water than sandy soils
Indicate whether the statement is true or false
FALSE
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Mitochondrial DNA is useful for tracing ancestry because:
A. recombination rarely occurs. B. mutations in mitochondrial DNA are rare; mitochondrial DNA has relatively little variation. C. mutations in mitochondrial DNA are almost always harmful. D. both recombination and mutation in mitochondrial DNA are rare. E. both recombination and mutation in mitochondrial DNA are rare, but when mutations do occur, they are almost always harmful.
Harrison and van Buuren identified a phosphate transport protein in Glomus versiforme, which is a
a. carnivorous plant. b. bacterium that parasitizes plants. c. mycorrhizal fungus. d. bacteroid. e. parasitic plant.
The highest tariff rates in U.S. history were the result of the
a. Reciprocal Trade Agreements Act of 1934. b. Hawley-Smoot Tariff of 1930. c. Tokyo Round of 1970. d. Uruguay Round of 1986.
Of the following, the area that is least likely to be a science is
A. agriculture. B. music. C. medicine. D. aircraft design.