Im not 100% sure but the best answer I can give is Prokaryotes because they came to be around the time oxygen did as well.
Some cells have to give up reproduction
A membrane lipid is a compound which belongs to a group of (structurally similar to fats and oils) which form the double-layered surface of all cells (lipid bilayer). The three major classes of membrane lipids are phospholipids, glycolipids, and cholesterol.
Deforestation. The animals forest that they once lived in are bein cut down.
