What are some human activities that lead to deforestation?

Many activities contribute to this loss including subsistence activities, oil extraction, logging, mining, fires, war, commercial agriculture, cattle ranching, hydroelectric projects, pollution, hunting and poaching, the collection of fuel wood and building material, and road construction.

Answer they used slash and burn

Explanation:

They didn't have fertilizer and they didn't know about it so they cut down trees where there was.