The correct answer is letter <span>d. none of the above. The choices presented are possible cause of soil erosion. Soil erosion happens when a big boulder of rocks and soils coming from a mountain slide down because of external forces just like water (specifically during heavy rains), gravity, and as well as burrowing animals.</span>
Answer:
Universe: all of space and time (collectively referred to as spacetime) and their contents.
Solar System: gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly.
Galaxy: a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
Cluster: a group of stars formed closely
Constellation: a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.
Answer:
of rising air that is part of cell that originates at the equator.
Explanation:
Deserts are regions of the world that receives little to no precipitation all year round. Most deserts are known to be hot during the day and very cold at night. Deserts are typically lifeless with little no biodiversity of organisms.
Most deserts of the world are usually found around 30 degrees north and south of the equator because of the rising air masses which are a part of the global circulation. At the equator warm air laden with moisture rises and moves away due to their density and pressure. As they leave they equatorial region, they drop their moisture to form clouds. The air then becomes cold and dry as it moves towards the pole from the equator. It eventually sinks as it approaches the tropics of the cancer and capricorn. This dry and cold air is what leads to the formation of desert. Dry and cold air moves on the surface and does not provide rainfall.
Convection currents is the movement of a fluid or a gas from one particular location to another location. This motion is created by the difference in the density or the temperature of the fluid or gas in the two locations. It could also be used in the movement of energy from one location to another due to the temperature gradient. For convection current in the atmosphere, it could be describe in the rising of warm air towards the upper portion of the atmosphere while the colder air goes under it. This happens because warmer air would have less density as compared to the colder air.