Which of the following is true of Jupiter's moon Europa?
A) It is rich in organic molecules and water.
B) It appears to have a liquid-water ocean below its icy crust.
C) It has methane in its atmosphere.
D) It was brimming with life in its history.
B
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According to the ______ theory social interaction extends life long selection processes. Physical and psychological aspects of aging leads to changes in the functions of social interaction.
Fill in the blank(s) with the appropriate word(s).
The first few hundred million years of the solar system's history is referred to as the
A) heavy bombardment B) big bang C) Hadean eon D) early pelting
Why is Isaac Newton sometimes said to have "united the heavens and Earth"?
A) Because he caused the scientific community to accept the idea that Earth is just one planet orbiting the sun like the other planets. B) Because Newton's law of conservation of energy seems to apply throughout the universe. C) Because he discovered that the energy processes that power the sun also operate on Earth. D) Because Newton's law of gravity seems to apply throughout the universe. E) Because of the fact that there are no exceptions to the laws of thermodynamics.
A bicyclist starts down a hill with an initial speed of 2.0 m/s. She moves down the hill with a constant acceleration, arriving at the bottom of the hill with a speed of 8.0 m/s. If the hill is 12 m long, how long did it take the bicyclist to travel down the hill?