Which of the following statements about the effects of deforestation on terrestrial ecosystems are true? Check all that apply.
A. Today, deforestation is one of the greatest problems facing terrestrial ecosystems.
B. Deforestation can lead to eutrophication of aquatic ecosystems.
C. At present rates of deforestation, it is predicted that all of the world's tropical rain forests will be degraded or gone within 10 years.
D. Deforestation can lead to loss of topsoil.
E. Deforestation usually leads to the overaccumulation of nutrients such as nitrates/nitrites in the soil.
Answer: D
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A. Modulators B. Corepressors C. Effectors D. Inducers
Which group of terms refers to the microsporophyll, the male portion of a flower?
(a) ovary, stamens, pistil. (b) stigma, style, ovary. (c) anther, stamen, filament. (d) megasporangium, microsporangium, ovule.
Complement proteins ____
a. prevent pathogens from entering the interior environment of the body b. bore channels in targeted cells, causing them to burst c. inactivate other complement proteins d. bind to pathogens making them a target for antibodies e. destroy healthy body cells as well as invading microorganisms
Insects and humans are both categorized as animals. Describe how insects' respiratory system, circulatory system, and digestive system differ from humans.
What will be an ideal response?