Which one of the following is a general characteristic of plants that are early colonizers during primary succession?
a. plants have wind-dispersed seeds
b. plants are able to fix their own nitrogen
c. plants can outcompete other plants that invade the area
d. plants are shade-tolerant
Answer: a. plants have wind-dispersed seeds
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Using Bentonite slurries to stabilize liquids in porous substances is an example of
A. Bioremediation B. Tertiary sewage treatment C. A containment method of remediation D. Extraction techniques of remediation E. In vitro extraction techniques
Christopher Columbus was the first person to discover the "New World". Indicate whether the statement is true or false
Human demand has exceeded Earth's ability to regenerate resources
a. True b. False
Gradual climate change is not caused by changes in Earth's ________.
A. obliquity B. volcanic activity C. eccentricity D. precession