Witch gas is most abundant in earth's atmosphere 1.oxygen 2.nitrogen 3.carbon dioxide 4.methane

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

You have 2 plants of the same type and same size, same amount of leaves. one of them is put inside the house and the other one is put in the balcony. you water them saturday, one plant with 200 ml and the other with 400 ml of water. which one of your plants need less water? explain.