Water pollution threatens wildlife but not the health of human beings.
Answer the following statement true (T) or false (F)
False
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From September to March, the Southern Hemisphere receives
A) less radiation than the Northern Hemisphere. B) more radiation than the Northern Hemisphere. C) exactly 12 hours of daylight and darkness. D) 24 hours of daylight.
Shale is metamorphosed into three rock types: (1) a banded gneissic rock; (2) a rock with small mica crystals with a shiny aspect; (3) a very shiny rock with large mica crystals; and (4) a dull slate with cleavage. Which of the following lists these rocks in order of increasing metamorphic grade?
A. 3, 2, 4, 1 B. 1, 2, 3, 4 C. 4, 3, 2, 1 D. 2, 3, 4, 1 E. 4, 2, 3, 1
Why are there so few ecosystems with more than four levels of consumers?
A) Biomass decreases by about 90% at each trophic level, moving upward. B) Top consumers compete with and kill each other with increasing population size. C) Consumers at these highest trophic levels typically form social groups that stop reproducing at high densities. D) Predators at the highest trophic levels simply are not intelligent enough to hunt other top predators.
Forearc basins will consist of thick sequences of highly deformed sedimentary rocks
Indicate whether this statement is true or false.