Answer:
Desert,
Explanation:
7. Desert is the place that has a high rate of erosion as the winds and other agents of erosion are most active here and desert land consists of the loosely defined sediments and thus there erosion and transportation is easy and quick.
8. The groundwater contamination takes place when oil, or salts and other chemicals, gets into the groundwater and it becomes unsafe for human use, the impact of dumping of wastes and other toxic substance can mix with the groundwater in the form of streams and create thus affects it.
9. The caves are formed by the dissolution of substance as limestone when the rainwater mixes with the carbon dioxide present in the air it pours into the soil forming a weak acid and then slowly dissolves into the rock's joints and bedding planes.
10. Decline or the groundwater table that is either due to overuse or due to the mining activities and places with low or less rainfall below average. Affects the supply of groundwater available for human use.
11. see quest 8.
12. Chemical weathering is the process where the rocks are broken down by the elements like the rainwater that mixes with the oxygen, carbon, and creates acid that breaks the rocks.
13. Too much growth of plankton is created due to the growth of the nutrients in the water and may trigger algae blooms that show low levels of oxygen in the water and is harmful to the fish population.
14. A volcanic eruption has some phases as repose, unrest, and eruption as after that magma is thrown out of the event along with the gases and water vapor tends to slow down the effects of erosion balances the rate by deposition of lava.
15. Weather and erosion can change the shapes of the rover as a river cut through the valleys making its way down to the sea bed it erodes and transforms the landscape by horizontal and vertical erosion, stream elongation, channel formation, etc.