Trees are being cut down for lumber in the amazon. in addition, new farms and factories are beginning to replace the forests and villages. what is an effect of this human activity?

an effect of deforestation is a decrease in wildlife. animals living in the amazon require trees in order to eat (animals like prey who eat leaves from trees) if these animals are left without food they will die from starvation and eventually go extinct. these animals who are preyed on by predators will cause the predators to have limited food sources due to their prey going extinct.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.