How do humans affect erosion?

A: Creating irrigation systems prevents water erosion.
B; Poor farming methods can prevent soil from being eroded.
C; Human activities can either increase or decrease erosion.
D; Cutting tress can prevent wind erosion.

Which statements describe sustainable development? multiple answer choice -fishing does not remove more fish from water systems than can be replaced by the number of fish that will be born to replace them. -sustainable development is development that is designed to improve the economic conditions in less-developed countries. -sustainable development is mainly a regional issue. -sustainable development means water is used at a rate that won't reduce the amount available for future use. - sustainable development policies only need to be concerned with environmental protection. - trees cannot be cut down faster than the number that will be replaced by new growth.