All the chemical energy in food is converted into running the body's metabolism
What will be an ideal response?
No, the energy from food also allows to do the things we like to do—think, walk,
ride a bike, etc.
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Models of the Big Bang that include inflation predict that the overall geometry of the universe should be "flat" (in spacetime). This prediction
A) agrees with data found by studying the cosmic microwave background. B) has been verified by observing the paths of light coming from distant galaxies. C) has been shown to be incorrect by study of the expansion pattern of the universe. D) cannot be tested at this time.
When a load is placed on the middle of a horizontal beam supported at each end, the bottom part of the beam undergoes
A) tension. B) compression. C) either of these D) none of these
Which of the following has been the most important for maintaining the Earth's stable climate over the time it took for large organisms to evolve?
A) impacts of water-bearing planetesimals B) the ending of the heavy bombardment C) plate tectonics D) the tides E) deep sea volcanic vents
Using the definitions for neap and spring tides, explain when is the best time to go surfing in one 24-hour day on Earth
What will be an ideal response?