Silled basins are thought to be the site of deposition of thick ____ deposits
a. fossil
b. evaporite
c. clastic
d. metamorphic
e. ash
b
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Judge the following sentence according to the criteria given below: The greenhouse effect is not a natural process that influences the temperature of Earth's surface and atmosphere BECAUSE it is now being altered by human emissions
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Flat-topped mountains on the ocean floor are called:
a. abyssal hills b. guyots c. abyssal plateaus d. pelagic hills
The process by which chemicals ingested by species in the lower trophic levels of an ecosystem build up in organisms in higher trophic levels is called
A. bioaccumulation. B. fragmentation. C. CITES. D. invasion. E. specialization.
Animals or plants living on the sea bottom are ________
A) fish B) benthos C) nekton D) xerophytes E) part of the lithosphere