Final answer:
Some of the countries facing the worst deforestation problems are India, China, Brazil, Central America, Southeast Asia, Africa, Ethiopia, and the Philippines. To prevent deforestation, measures such as replanting, conservation, afforestation, reforestation, and natural regeneration are being implemented.
Step-by-step explanation:
Some of the countries facing the worst deforestation problems include India, China, Brazil, Central America, Southeast Asia, Africa, Ethiopia, and the Philippines. These regions are experiencing high rates of deforestation due to factors such as high demand for firewood and building materials, illegal slash and burn practices, and unsustainable timber exploitation.
To prevent deforestation, some countries have implemented measures like massive replanting programs, conservation efforts, afforestation, reforestation, and natural regeneration. Governments play a crucial role in limiting excessive deforestation through environmental management, infrastructure development, and imposing incentives and sanctions to promote sustainable practices.