Plant defenses against herbivore grazing include
(a) thorns.
(b) plant secondary compounds.
(c) mobility.
(d) both a and b.
(d) both a and b.
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How can oil cause hypothermia in birds? a. Oil increases insulation on the bird's feet alone
b. Oil coats large outer feathers so they cannot repel water. c. Oil adds weight to feathers. d. Ingestion of oil causes a decrease in body temperature.
A person choking on a piece of food
a. cannot talk, breath, or cough. b. can cough but cannot breath or talk. c. can talk and cough but is unable to breath. d. can breath through their nose if they remain calm. e. can do none of these
One difference between mitosis and meiosis is that mitosis ________.
A. produces cells genetically identical to the parent cell, but meiosis does not B. requires only one parent cell, but meiosis requires two parent cells C. produces haploid cells, but meiosis produces diploid cells D. produces more daughter cells for each division than meiosis
Which of the following scientists stated that each climax formation is capable of "repeating with essential fidelity the stages of its development."
A) F. E. Clements B) J. T. Curtis C) R. P. McIntosh D) R. O. Slatyer