What are the three most abundant gases in earth's atmosphere?

a. carbon dioxide, nitrogen, oxygen
b. nitrogen, oxygen, argon
c. silicon, oxygen, nitrogen
d. carbon dioxide, oxygen, helium

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.

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?

What best describes the structure of the declaration of independence?