What type of succession begins in an area where an ecosystem has been disturbed, removed, or destroyed, and that contains soil or bottom sediment?
A. primary succession
B. secondary succession
C. ecological establishment
D. disturbance succession
E. facilitation
Answer: B
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How many valence electrons does bromine (Br, atomic no. = 35) have?
A. 28 B. 1 C. 35 D. 21 E. 7
New lithosphere is formed at
A) ocean trenches. B) convergent plate boundaries. C) transform plate boundaries. D) spreading centers.
Consider a comparison of people living well in densely populated cities versus people living well in less dense suburbs. For the people living in the cities, it is
A) less expensive to provide social services and utilities but costs more to control crime and pollution. B) less expensive to provide social services and control crime and pollution. C) more expensive to provide social services and utilities and to control crime and pollution. D) more expensive to provide social services and utilities but less to control crime and pollution.
Explain how human health may be affected by global climate change
What will be an ideal response?