Condition that leads to formation of silt at the mouth of a river

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.

Me plzzz what is the ratio of water than falls on land as compared to the amount that falls onto the oceans? what role do clouds play in regulating earth’s energy balance? me plzzz

The plants growing on scotlands highland moors are a)mixed forestb)grasses and low shrubsc)evergreen treesd)palm trees and ferns