Final answer:
Clear-cutting is a forest management practice where all trees in an area are cut down. In North America during the 19th and 20th centuries, clear-cutting of forests led to the loss of old-growth forests, destruction of habitats, loss of biodiversity, and contributed to climate change.
Step-by-step explanation:
Clear-cutting is a forest management practice where all trees in an area are cut down, leaving no standing trees. In North America during the 19th and 20th centuries, clear-cutting of forests had significant consequences. It led to the loss of old-growth forests, destruction of habitats, loss of biodiversity, and contributed to climate change. It also had social and economic impacts on indigenous communities and the timber industry.