<span>The student's experiment is modeled after mass wasting, which is also known as mass movement or slope movement. One of the factors of mass wasting is gravity. The water from the hose weighs down the soil and causes the clumps of soil to move downward through the stack of rocks.</span>
You see, we are more likely to find tropical rainforest and jungles on a hot and sunny location like on the equator. In fact, desert doesnt always have to be hot at all, for instance, the antarctica. Deserts are formed on locations with different climates and less precipitation. And unlike the locations on the equator, which receives high amount of rainfalls, deserts receive way too little, thus, affecting the vegetation and growth in the area.