The answer would be the cracking of rock caused by the freezing and thawing of water.
The answer is D. That Pakistan's laws are based on secular and Islamic principles
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Answer:
The correct answer is D
Explanation:
During the 20th century, there was an increasing interest in the environment. The impact of human activity on the environment has been observed locally since centuries. Pollution of canals and chimneys in crowded urban areas etc were all causes of concern.
However, with a better understanding of our earth and increase in Medical knowledge of the 20th century, we could observe how our activities were having a global impact on the ozone layer and the melting ice caps.
Evidence was also provided on how human health was affected by this. The use of fossil fuels was not only directly damaging to the atmosphere, it was also dangerous for humans e.g. carbon monoxide produced by car emissions.
The form of energy would be C)Geothermal energy. Geothermal energy is heat within the earth so people can use this heat as steam or hot water to heat buildings and generate electricity
