Photosynthetic life existing on a planet farther from the Sun than the Earth would most likely be
A) smaller, less efficient at collecting solar radiation or have a faster metabolism than photosynthetic life on Earth
B) identical to photosynthetic life on Earth
C) larger, more efficient at collecting solar radiation or have a slower metabolism than photosynthetic life on Earth
D) impossible
C
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Suppose an car engine could be made to burn at a higher temperature, without harming or altering any other part of the engine's operation. At the higher temperature, the engine would
A) have a lower efficiency. B) have the same efficiency but be able to operate at a higher power. C) have a higher efficiency. D) still consume the same amount of gasoline per kilometer traveled. E) consume more gasoline per kilometer traveled.
The colors you see with a prism result because the light is diffracted
Indicate whether the statement is true or false
All the following types of objects are found almost exclusively in the disk (rather than the halo) of the Milky Way except ________
A) X-ray binaries B) high-mass, red supergiant stars C) young stars D) globular clusters
Riding down a river in an old canoe, if the discharge of the river increases a little and the width and the depth of the river stay the same, the speed of the river will
A) decrease. B) increase. C) stay the same. D) become unpredictable.