Allelopathy, the pine needles make the ground more acidic so weeds cannot grow and steal nutrients the tree needs
A or c probably I think a tho
N=3^K-1 I really don't know how to explain it but that's the formula <span />
<span>Deforestation typically leads to soil erosion and the ruin of the ecosystem where deforestation occurred. The land gets destroyed and with it the natural habitat of the animals and plants who live there. In addition, we, the humans, lose oxygen because of lack of trees.</span>
