QUESTION 34 Why do most scientists accept the claim that climate change is being

Question

QUESTION 34 Why do most scientists accept the claim that climate change is being caused by human activity? O Computer models that include the effects of hunan activity correctly predict the current trend of increasing temperatures. O Computer models correctly reproduce past climate variations. O Computer models that do not include the effects of human activity do not correctly predict the current trend of increasing temperatures. O Levels of atmospheric carbon dioxide show a sharp increase since the industrial revolution. o all of the above QUESTION 35 Why does Earth have the strongest magnetic field among the terrestrial worlds? O It is the only one that has a molten metallic outer core. o It rotates much faster than any other terrestrial world O It is by far the largest terrestrial world. O It is the most volcanically active world. O It is the only one that has both a molten metallic outer core and reasonably rapid rotation. QUESTION 36 Why does the burning of fossil fuels increase the greenhouse effect on Earth? Burning produces infrared light, which is then trapped by existing greenhouse gases. Burning fuel warms the planet. Burning depletes the amount of ozone, thereby warming the planet. Burning releases carbon dioxide into the atmosphere. All of the above are true. QUESTION 37 Why is Mars red? O It is made primarily of red clay. O Its surface is made of ices that absorb blue light O Its surface rocks were rusted by oxygen. O Its surface is made of ices that absorb red light. O Its atmosphere scatters blue light more effectively than red light. QUESTION 38 Why would the weather become more severe as the greenhouse effect increased? Warming would increase the evaporation of the oceans, leading to more water in the atmosphere and more frequent and severe storms. O Warming would reduce the amount of water on the Earth O Warming would deplete the ozone layer and let in more particles from the solar wind Warming would dry out the atmosphere, leading to severe droughts. all of the above

Explanation / Answer

34.

Most scientist accept that climate change is due to human activity because level of CO2 in atmosphere is continuously increasing after industrial revolution.

Hence, correct option is levels of atmospheric carbon dioxide show a sharp increase since the industrial revolution.

35.

The correct one option is for

D) It is the only one that has both a partially molten metallic core and reasonably rapid rotation.

36.

Burning of fossil fuels releases carbon dioxide into atmosphere is the correct option.

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