Answer:
Option (D)
Explanation:
Desertification is usually defined as the process that causes the top fertile soil to change into a complete desert area, due to high wind erosion, lack of rainfall, and also high temperature in that area.
This reduces the fertility of the soil and this affects the growth and productivity of the soil, thereby leads to the absence of vegetation and permanently destroys the soil.
Thus, the correct answer is option (D).
Answer: Humans can affect the biosphere by reducing biodiversity in the environment. This can be due to cutting or burning down trees, constructing neighborhoods and houses, or emitting carbon into the atmosphere. These cause can lead to the endangerment of many species and possibly extinction.
I believe the answer should be D. Air, warmed by the earth, rises, expands and cools.
<u>Answer:</u>
The model of graphing the "fall in sea level" with the "rise in sea level" can be used to "predict how changes in sea level" shape the Earth.
<u>Explanation:</u>
- The cycle of rise and fall in the sea level repeats every fifteen days owing to the increase and decrease in the gravitational pull by the moon.
- When the sea level increases, the coasts and lowlands submerge under the water and when the sea level decreases, more than what had submerged is exposed, thus changing the shape of the Earth.
