What are the most abundant igneous rocks in the Earth's crust?
A. Basalt and granite
B. Diorite and andesite
C. Peridotite and volcanic glass
D. Gabbro and rhyolite
Answer: A
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What differences exist between tropical wet (Af), tropical monsoon (Am), and tropical wet and dry (Aw) climates? Do you expect to observe any significant differences in types of vegetation in these different climates groups?
What will be an ideal response?
Humans have significantly affected natural vegetation except in regions too remote to be settled
Indicate whether the statement is true or false
The study of the interrelationships between organisms and their environment is called
A) biogeography. B) ecology. C) pedology. D) biology.
Which of the following ecosystems accounts for 35.6% of the world marine fishery?
A) Coastal and coral systems B) Nontropical shelves C) Open ocean D) Tropical shelves E) Upwellings