Answer:
Sun.
Explanation:
The Sun and other gasses work together and increase the greenhouse gasses.
Answer: Decrease
Explanation: Because their foot is being used more.
I think that's what it said.
The Characteristics of life are growth, reproduction, homeostasis, sense and respond to stimuli, obtain and use energy, made of cells, adapt and evolve.
Free entry is going to be your answer
Flat face I believe is your answer