The biomass of planktonic, unicellular algae in tropical regions ________.
A. increases during the summer months
B. decreases during the summer months
C. decreases during the winter months
D. increases during the winter months
E. remains nearly constant over the year
Answer: E
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The ocean crust is composed mostly of
a. granite. d. rhyolite. b. peridotite. e. gneiss. c. basalt.
Groundwater under high fluid pressure is called a(n) ____________________ system. It is confined by rock bodies called ____________________
Fill in the blank(s) with correct word
Which animal consumes energy from the highest number of links in the food web? Name a possible problem that this animal could be subjected to that others in the food web do not risk
What will be an ideal response
Which plate does the westward-moving South American Plate encounter in South America??
A) ?Cocos plate B) ?Juan De Fuca plate C) ?Farallon plate D) ?Nazca plate