What is the source of most of the dissolved materials found in the ocean?
a. biological activities
b. weathering of crustal rocks
c. outgassing
d. convection currents
e. atmospheric deposition
b
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What type of clouds, if any, would form when a cP air mass moves across warm water? Are conditions any different when mT air moves across a cold land surface? Which types of clouds would form in this latter case?
What will be an ideal response?
All African countries are members of the Organization of African Unity (OAU)
Indicate whether the statement is true or false
What is one factor that accounts for large family size in India?
A. more children means more help from the government B. they want to send children out to work in factories C. a preference for male children means that couples will continue having children D. birth control methods are practically nonexistent E. their daughters stay with parents even after they have children
The difference between open and closed systems is that
A. open systems can acquire matter and energy, but closed systems cannot. B. open systems are not predictable but closed systems are. C. open systems are much simpler in terms of the number of interactions between objects in the system. D. open systems occur on land and closed systems occur in the ocean.