Why can scientists look at Rock layers to get information about geologic record

Anna lives in a city that experiences high precipitation, with an average annual rainfall of 524 millimeters. it is warm all year. it is hottest during july, with an average temperature of 98°f, and coldest during december, with an average temperature of 80°f. tim lives in a city with an average rainfall of 30 millimeters per year. it has hot summers and cool winters. it is hottest during july, with an average temperature of 70°f, and coldest during january, with an average temperature of 28°f.anna’s city is in a  continental  dry  moderate  tropical    climate, while tim’s city is in a  continental  dry  moderate  polar    climate.

Which factors add to the greenhouse effect and are caused by human activities?

How has the geography of india made it difficult for its people to expand before modern technology?