Individual trees of the forest are being cut down and burned for fuel, logging, or agricultural purposes.
Entire sections of forest are slowly disappearing as deforestation occurs, and trees are not replaced.
As trees disappear, animals in the forest are left with dwindling habitat space. Climate change affects the habitat as well, so animals unable to adapt may die off.
Soil that is left exposed may slowly erode. There are less trees to balance the climate of the ecosystem, so temperature and weather patterns may change.
Deforestation can affect rainfall and weather patterns, causing less rain to fall in the forest, and more rain to fall in nearby grasslands.
Deforestation can affect the entire world, because as trees burn, they release carbon. Carbon in the atmosphere leads to a greenhouse effect and causes the earth to warm slightly.