Along coastlines, the area between high tide and low tide is the
A. hydrothermal vent.
B. continental shelf.
C. intertidal zone.
D. estuary.
Answer: C. intertidal zone.
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The origin of a new plant species by hybridizing two existing species, coupled with accidents during cell division, is an example of _____
A) allopatric speciation and autopolyploidy B) sympatric speciation and allopolyploidy C) allopatric speciation and allopolyploidy D) sympatric speciation and autopolyploidy
Which of the following describe a role that ethylene plays in plant physiology. Check all that apply.
_____ Retarding stem and root elongation. _____ Hastening the ripening of fruit. _____ Inhibition of leaf abscission. _____ Inhibition of lateral bud growth. _____ Accelerates the loss of damaged fruits.
Which of the following food chains will allow the most energy to be available for human use?
a. corn ? cow ?humans b. corn ?humans c. algae?minnows?fish?humans d. alfalfa?cow?milk?humans e. corn?hen?eggs?humans
Most of those affected with an autosomal dominant genetic disorder are homozygous for that trait
a. True b. False