____ strips an area of vegetation and soil, creating an ecological dead zone.
A. Biological magnification
B. Renewable energy
C. Ecological restoration
D. Ground mining
E. Surface mining
Answer: E
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How do myelin sheaths increase the speed with which action potentials are propagated along an axon?
A) They increase the permeability of Na+ ions in the plasma membrane. B) They amplify the action potential by increasing sodium influx along the entire distance of the neuron. C) They cause action potentials to "jump" down the axon rather than travel in a continuous path along every site on the axon.
Cellulose is ____
a. the most complex of the organic compounds b. a polymer of glucose and fructose c. a polymer of glucose and galactose d. a component of plasma membranes e. a material found in plant cell walls
The female gametophyte generation of angiosperms is represented by:
A) seeds. B) embryo sacs. C) pollen tubes. D) pollen grains.
When animals are injected with human blood, they form ____________.
Fill in the blank(s) with correct word