Answer:
As populations transition from rural to urban living, many social changes take place. For example, as people move to urban environments, they tend to live in closer proximity to each other. This presents problems when it comes to sanitation and hiegiene.
Explanation:
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I think you forgot to add the descriptions along with this question. Based on my research and knowledge, i am answering the question. Land reflects the sun's energy slowly, while oceans absorb the sun's energy more quickly and this best states how oceans and land absorb the sun's energy differently.
Threats include:water controlintroduced species<span>development</span>
Answer:
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Explanation:
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The two minerals that are found in cement are : Silica and calcite.
<u>Explanation:</u>
Different minerals form the composition of cement but the minerals that are most commonly found in cement are calcite which is contained in the limestone.
The other mineral that is used in the production of cement is silica in the form of raw rock type used to make cement which is found in clay. So they form an important part of formation of cement.
