Which is not a characteristic of thermoclines?
A) Tropical thermoclines are deeper than those at higher latitudes.
B) Thermoclines are not identical in form.
C) Polar waters tend to lack thermoclines.
D) Thermoclines are more abrupt in the high latitudes.
D
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After three half-lives, a radioactive element will have _________ of its original parent atoms
a. 1/2 d. 1/8 b. 1/6 e. 1/32 c. 1/3
Consumers are ________
A) organisms that feed on soils and soil nutrients B) organisms that feed on decomposers C) organisms that feed on one another D) organisms that feed on dead organic matter E) organisms that feed on other living organisms
Which of the following is true of the leading strand?
A) It is produced more rapidly than the lagging strand. B) It is produced more slowly than the lagging strand. C) It is produced continuously. D) It is produced discontinuously.
Isotopes are atomic nuclei that are radioactive.
Answer the following statement true (T) or false (F)