Answer:
The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
Explanation:
You need to make sure all atoms are equal in number when balancing a chemical equation
Answer:
A) the envelope of gases surrounding the Earth the envelope of gases surrounding the Earth
Explanation: A biosphere is layers of gas surrounding earth's atmosphere, the envelope of gases surrounding the Earth is the closest thing to that description.
Answer is 1 the sun is missing
