The correct answer is: A. Some species will be extincted.
Forests are home to a vast array of plant and animal life. They provide food, shelter, and breeding grounds for many species. If we uncover half of the forest, covering of the earth, many species will lose their homes and will not be able to survive. This will lead to the extinction of some species.
Option B is incorrect because population and ecological imbalance will not rise up immediately after we uncover half of the forest. It will take some time for the effects of deforestation to be felt.
Option C is incorrect because energy crisis will not occur immediately after we uncover half of the forest. It will take some time for the effects of deforestation to be felt.
Option D is incorrect because the rest half forests will not be able to maintain the balance if we uncover half of the forest. The forests are interconnected and they rely on each other for survival. If we remove half of the forests, the remaining forests will not be able to support the same number of species.