Answer:
A. Compounds contain fixed ratios of different elements.
Explanation:
Water always has this 2:1 ratio of hydrogen to oxygen. Like water, all compounds consist of a fixed ratio of elements. It doesn't matter how much or how little of a compound there is. It always has the same composition.
Answer:
Orbital
Explanation:
I believe, to the best of my knowledge, that the answer that you're looking for here is the Orbital. Hopefully this helps.
C because oxygen was a byproduct of photosynthesis and proved to be EXTREMELY important in the atmosphere.
Answer: because the flu is not liquid it is air born even in your body it is airborn so it floats through your orgons and through any thing in its way even through the heart
Explanation:
They play an important role in the control system by sensing defects that occur during essential processes such as DNA replication or chromosome segregation, and inducing a cell cycle arrest in response until the defects are repaired.