Today, it takes about ______ Calories of energy to produce about 1 Calorie of food.
a. 2
b. 20
c. 55
d. 90
e. 125
Answer: c. 55
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Which statement is more accurate?
A) Every parallel begins and ends at the poles. B) Every meridian is actually a circle rather than a curved line. C) Every meridian is the same length and has the same beginning and end. D) Every meridian is distorted by magnetic declination. E) Every parallel is the same length.
Because of the Coriolis force, water in a sink in the ____ Hemisphere drains ____
A) Northern, clockwise B) Northern, counterclockwise C) Southern, clockwise D) Southern, counterclockwise E) none of the above
Dinoflagellate cell walls are composed of ________.
A. calcium carbonate B. cellulose C. silica D. a combination of these choices E. None of these choices.
What is an ecosystem? What is the spatial scale of an ecosystem? Provide some examples of an ecosystem
What will be an ideal response?