What factors can destroy populations and lead to the extinction of species?

Natural disasters, deforestation, overpopulation, Invasive species to name a few.

sorry no idea a

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

for a different answer set the answer would be because the oxygen in the water had depleted (apex)