All of these listed answer choices are correct. Wind, water, and plants all change the shape of the land through weathering and erosion. When the land changes, it can cause problems for humans and the environment. Sometimes humans have to intervene and help fix what nature has created.

Weathering is the process of wind, water, and vegetation breaking apart rocks and other natural materials. The house in the example is unstable because the rocks below the foundation have been beaten by rain and wind and broken apart.

The best option to prevent the hill from continuing to be eroded is to plant new grass. The roots of the grass will absorb water and hold the dirt in place. As wind and rain wear things down and move them away, humans must come up with solutions to prevent it from getting worse. The other answers are not reasonable or will not work. Leaves will not absorb the water and will wash away, leaving it alone will allow the problem to get worse, and putting a slide on the hill is dangerous!

The damage from Hurricane Katrina permanently changed the area and the land of New Orleans. The floodwaters destroyed many buildings, and when the water receded to the ocean, it dragged dirt, rocks, and debris along with it changing the landscape. The city could install barriers or levees to block the water from passing into the city. There were already some in place, but there could be taller levees installed or more of them.

Shrubs and tall plants next to fields of wheat, corn, and other crops help act as a windbreak and stop the wind and dust from tearing up the fields. If the soil is very dry, it will get swept up by the strong winds and create a tornado-like force that will bury all of the crops in dust and dirt. The shrubs block the soil from being picked up, and the wind from pushing through the crops the farmers are growing.

This beautiful canyon was formed by years and years of wind and water pushing through the ground and blowing against the sides. Erosion is the movement of broken down Earth to new places, and that is what the river and wind in this area have done. The water races through the canyon, cutting a path while the wind blows tiny particles of soil and sand into the walls breaking it away slowly and moving it to new places. Many times humans get involved and try to prevent wind and water from damaging areas.

This is a widespread problem on many farms, especially in the mid-West, where it is very dry and can get windy. The best option to prevent the wind and water from changing the land's shape and damaging her farm is to water the soil to keep it wet and less dusty, plant tall shrubs to help block the wind, and rotate the crops, so the nutrients in the ground are not all used up. If farms are left to become very arid and dusty, it can create large dust storms and damage property and change the land over many miles.

The best and most reasonable way to stop wind or water for changing the shape of the land would be to plant shrubs and trees to hold the soil together. Tree roots stabilize and secure the soil helping it from being eroded. This process can help control erosion (the movement of broken-down materials), so there are fewer changes to the Earth.