Which of the following statements is true?
A) The temperate deciduous forest is composed of a high diversity of deciduous trees that lose their leaves in the fall because of low soil fertility.
B) Agriculture is often not very successful in grasslands because of the poor soils.
C) The high species diversity of a tropical rain forest is supported by a high diversity of soil organisms, high soil fertility, and high rainfall.
D) Agriculture is often not very successful in a tropical forest because of the poor soils.
Answer: D
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Respond to statements 86–90 with reference to the five plant
micronutrients listed below. a. iron b. boron c. manganese d. zinc e. copper D 86. This nutrient is needed for normal root development. D 87. This nutrient plays an important role in terminal bud formation. D 88. Deficiency of this nutrient results in chlorosis, dead spots in leaves, and stunted growth. D 89. Deficiency of this nutrient results in chlorosis and yellow, green striping in leaves of grasses. D 90. Deficiency of this nutrient results in leaves with dark veins, but leaves whiten and fall off.
The sori of most ferns are found on the:a
fiddleheads. b. fronds. c. rhizomes. d. prothalli. e. antheridia
Which of the following represents the phases of mitosis in their proper sequence?
a. prophase, metaphase, anaphase, telophas b. interphase, prophase, metaphase, telophase c. anaphase, interphase, prophase, metaphase, telophase d. prophase, metaphase, anaphase, telophase, cytokinesis
Darwin recognized that female preference for showy colors based on inheritance causes these male traits to become
more common over time. ________ Indicate whether the statement is true or false.