Briefly describe how human activity is affecting Earth's ozone layer
What will be an ideal response?
Human-made chemicals called CFCs rise into the stratosphere, where they are split by ultraviolet light. The chlorine ions released in this way catalytically destroy ozone. Thus, human activity is depleting Earth's ozone layer.
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In size, Mercury is intermediate between:
A) Earth and Venus. B) Mars and Earth. C) the Moon and Mars. D) Pluto and the Moon. E) Ceres and Pluto.
The Galileo probe was deliberately steered into Jupiter's atmosphere, ending its mission
Indicate whether the statement is true or false
In glass, which of the following colors of light travels fastest?
a. red b. blue c. yellow d. All three of the above travel at the same speed.
A baseball batter hits an incoming 45.0-m/s fastball. The ball leaves the bat at 56.0 m/s after a ball-on-bat contact time of 0.040 s. What is the force exerted on the 0.25-kg baseball?
a. 631 N b. 68.8 N c. 350 N d. 16.2 N e. 281 N