What human activities could decrease erosion? Check all that apply.

stripping the land of vegetation to build a mall

letting cattle overgrazing farmland

planting trees and shrubs

surrounding a corn field with a fence or shrubs

leaving roots after harvesting crops

contour or terraced farming

air quality

poor drinking water

and heavy polution

can lead to poor health

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.