Select the properties of water that make it essential to life.
a. Cohesion
b. Ionic bonding
c. Adhesion
d. Nonpolar covalent bonding
e. High heat of vaporization
Answer: a,c & e
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Which of the following is not a problem
caused by Canada geese? a. Their feces can cloud lakes. b. Their feces contain harmful bacteria. c. They can destroy lawns. d. They can be dangerous to air traffic. e. All of these
You are asked to culture an unidentified sample of animal tissue. You notice that the cells seem to fail to exhibit density-dependent inhibition. The source of this tissue sample is most likely
A) a cancerous tumor. B) skin from a human. C) liver from a cow. D) sperm-producing tissue of the testis.
The collection of elements that make up the human
body are worth approximately a. 46 thousand dollars. b. 30 million dollars. c. 118 dollars. d. 5 thousand dollars. e. none of these.
Which of these is unique to flowering plants?
a. an embryo surrounded by nutritive tissue b. double fertilization c. pollen production d. haploid gametophytes e. a dominant sporophyte generation