The greatest contribution of plants to living things on earth is that they gave us life. Without them, we shouldn't have been survived in this world. Plants became our everything that's why God created them in the first place. Plants gave us our resources; plants gave us the things that we have right now because basically, they became the sources of the most of the things we have right now. Plants gave us air, the oxygen, obviously; plants gave us food just like the rice, corn, the fruits and veggies; plants also became our medicine in some cases. Plants made our body healthy and strong. Our lives seriously depend on them because without them, we should not be here in the first place.