As a block of ice at 0°C melts, the block absorbs energy
A) and decreases in temperature.
B) and increases in temperature.
C) without a temperature change.
D) all of the above
E) none of the above
Answer: C
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A(n) ____________________ is the largest known structure in the universe
Fill in the blank(s) with correct word
The moons of Uranus have been named after ____
a. Roman gods b. Greek goddesses c. characters of Shakespearean plays d. characters of Tennessee Williams' plays e. the Romanoff family children's names
The early atmosphere of Earth had much less oxygen than today. How has Earth's oxygen abundance increased over Earth's history?
A. Ultraviolet light breaks up ozone into oxygen. B. Volcanic eruptions release large amounts of oxygen. C. Cometary impacts over Earth's history have contributed oxygen to the atmosphere. D. Plant life generated oxygen through photosynthesis. E. None of these choices are correct.
There is a superforce that separates into the electromagnetic, weak, and strong nuclear forces below a critical temperature
Indicate whether the statement is true or false