Science

1. Which gas has recently increased in the mesosphere, creating a rise in water vapor which has led to the formation of high-altitude clouds that are visible at night?(1 point)

A. Hydrogen

B. Carbon Dioxide

C. Methane

D. Ozone***

2. Scientists are monitoring the pH of oceans. Which of these are they most likely studying?(1 point)

A. the level of carbon dioxide in the air***

B. the health of coral colonies

C. the population of polar bears

D. the rise of sea level

Climate Change Unit Test

3. Three different scientific institutions provide data about how much the annual global temperature has deviated from the norm in the years 1880 to 2014. The norm is based on the temperatures of a base period, from 1951 to 1980.

Institution A’s data show that the annual global temperature deviated from the norm by 0.75°C in 2010.

Institution B’s data show that the annual global temperature deviated from the norm by 0.72°C in 2010.

Institution C’s data show that the annual global temperature deviated from the norm by 0.77°C in 2010.

(1 point)

A. The institutions gathered enough data for scientists to draw a conclusion about whether the annual global temperature is gradually increasing.

B. The institutions have not yet gathered enough data for scientists to draw a conclusion about whether the annual global temperature is gradually increasing. ***

C. The data gathered by each institution is very similar to the data gathered by the other institutions.***

D. The data gathered by each institution is very different from the data gathered by the other institutions.

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2. 👎
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