Which statement applies to resources from the sea?
A) They are easier to recover than from the land.
B) They are more difficult to locate and extract than resources on land.
C) They are in greater variety than minerals on land.
D) They are less expensive to recover than from land.
B
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One difference between prokaryotic and eukaryotic cells is that
A) prokaryotic cells have a nucleus, whereas eukaryotic cells do not. B) prokaryotic cells have existed on Earth far longer than eukaryotic cells. C) the DNA of prokaryotic cells is found in linear chromosomes, whereas the DNA of eukaryotic cells is found in a single circular chromosome. D) eukaryotic cells are generally smaller than prokaryotic cells.
What is an example of symbiosis?
a. environmental resistance b. carrying capacity c. succession d. progression e. commensalism
What did Harry Hess and Robert Dietz suggest the cause of the continents moving was?
A) Convection currents B) Radioactive decay C) Conduction D) None of these choices
What is the primary factor driving trees to grow so tall in forests?
A. water B. nitrogen C. light D. wind E. heat