Step-by-step explanation:
Increasing population can cause deforestation.because increase in number of population wants more land for infrastructure etc.,because of scarcity of land , which would be not good for animals habitat.
Also, job opportunities may get reduced, due to increase in population.it may lead to poverty.
As population increases, per capita available income declines. People are required to feed more children with the same income. It means more expenditure on consumption and a further fall in the already low savings and consequently in the level of investment.
It may cause scarcity for resources such (Natural gas petroleum,wood,etc ); as their will be increase in demand of such resources while increasing in population.
As population will increase demand of food also increase.So for more crop production ,mans have to clean the forest for land to grow their crops.