<u>Different types of water </u><u>erosions</u><u>:</u>
Sheet and rill erosion
Sheet erosion occurs when a thin layer of topsoil is removed over a whole hillside paddock—and may not be readily noticed.
Rill erosion occurs when runoff water forms small channels as it concentrates down a slope.
Scalding
Scalding can occur when wind and water erosion removes the top soil and exposes saline or sodic soils.
Gully erosion
Gully erosion happens when runoff concentrates and flows strongly enough to detach and move soil particles.
Tunnel erosion
Tunnel erosion is the removal of subsoil.
When water penetrates through a soil crack or a hole where a root has decayed, the soil disperses and is carried away with the flow to leave a small tunnel.
Stream bank erosion
Recent floods have made stream bank erosion a widespread problem across Queensland.
The major cause of stream bank erosion is the destruction of vegetation on river banks (generally by clearing, overgrazing, cultivation, vehicle traffic up and down banks or fire) and the removal of sand and gravel from the stream bed.
Erosion on floodplains
Some of Queensland’s best agricultural land is on floodplains because of the high fertility soils and availability of water for irrigation. These areas are subjected to high velocity floods that erode soils with insufficient surface cover.
The sun is mostly composed of the elements hydrogen (H) and helium (He). By mass the composition of the sun is 75 percent hydrogen and 25 percent helium. Various metals make up less than 0.1 percent of the mass of the sun. The temperature of the sun’s surface is about 10,340 degrees Fahrenheit (5,726 degrees Celsius).
Answer:
The greenhouse effect is a result of absorption and radiation of energy in the atmosphere.
Explanation:
Answer: Option (2)
Explanation:
Due to the increasing urban population, there are a lot of issues that has been created such as pollution, demand for food, scarcity of water, job opportunities and so on.
Population density has been constantly increasing and the forest areas have been reduced due to the cutting down of trees and making it a settlement area for the people.
Thus, the most suitable answer is option (2).
Answer:
Southern California(Hottest) Antartica (Coldest)
