Judge the following sentence according to the criteria given below: The vast majority of carbon dioxide in the ocean-atmosphere system is found in the ocean BECAUSE methane is approximately 25 times more effective as a greenhouse gas than carbon
dioxide. A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct, but the reason is incorrect.
D) The assertion is incorrect, but the reason is correct.
E) Both the assertion and the reason are incorrect.
B
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Rock deep within the Earth is ________ and ________.
A. cool; heat flows in toward Earth's center B. unknown; we can only guess about conditions there C. hot; heat flows inward toward Earth's center. D. the same temperature throughout the earth; heat flow is not an important consideration E. hot; heat flows out toward Earth's surface
The circle of illumination divides Earth into two hemispheres known as ____
a. longitude and latitude b. east and west c. summer and winter d. day and night e. north and south
Which of the following statements best describes how this object may have formed?
A. Material accumulated into a sphere because of gravity, and it underwent nuclear fusion of hydrogen. B. A star ejected its outer envelope of gas and plasma. C. A supernova exploded, probably from the late-stage evolution of a high-mass star. D. Interstellar gas and dust accumulated due to gravity. Some pockets had enough mass to cause star formation.
The increased incidence of acid rain is primarily due to the burning of fossil fuels
Indicate whether this statement is true or false.