Please help :( pls pls pls pls pls pls i give brainliest. only task 2.
ignore task 1, I thought it could help.

Human could use an electric saw to cut trees, if we keep cutting trees we will receive less oxygen since trees uses our carbondioxide that we exhale, and the tree will exhale their oxygen in the air if there isn't enough oxygen some insects/animals will die that could potentionally break the food cycle.

idk if this answers your question.

answer; round wood logs, building materials like (plywood),also pulp and paper products;