The end of the Earth may come in about how many years, when the Sun runs out of fuel and becomes a red giant?
a. 100 million years
b. 2 billion years
c. 5 billion years
d. 10 billion years
Answer: c. 5 billion years
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Why is predicting future sea level change such a tricky task?
What will be an ideal response?
The features that form when the land surfaces caves into large subsurface voids created by solution of bedrock some distance beneath the surface are called ______________. (two words)
Fill in the blank(s) with correct word
Which process has been largely responsible for increasing the amount of CO2 in the last 200 years?
A) Increasing cattle ranching worldwide B) Disintegration of petroleum-based plastics C) Use of industrial fertilizers D) Burning of fossil fuels
Streamlines on a weather map depict
a. ?water temperature. b. pressure. c. ?wind flow. d. ?dew point. e. ?ocean currents.