The main causes of the loss of plant biodiversity include

A) plant diseases and clear-cutting of forests to create farmland.
B) herbivory, logging, and air pollution.
C) deforestation by clear-cutting or burning of forests to create farmland.
D) plant diseases and herbivory.


Answer: C

Biology & Microbiology

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A) nicotine molecules and the neurotransmitter acetylcholine. Binding releases dopamine, which causes pleasurable feelings. B) postsynaptic receptors that normally bind endorphins. C) the dopaminergic receptor, releasing acetylcholine, which causes the pleasurable feelings. D) the pleasure center in the brain.

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Select the compound that contains the most energy:a

AMP b. ADP c. ATP d. Pi e. AMP, ADP, ATP and Pi all contain equal amounts of energy.

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Which is involved with the regulation of eukaryotic genes?

a. operator b. DNA polymerase c. TATA box d. operon

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A bottle of Na in solution and a bottle of Cl in solution are mixed together and the water evaporated. What type of bond will be created between the atoms, and what will be the product?

A. ionic bonds; table salt B. hydrogen bonds; sodium hydroxide C. covalent bonds; sodium chlorine D. carbon bonds; carboxyl groups

Biology & Microbiology