Answer:
<u>(A) Plants would probably not have enough nitrogen.</u>
Explanation:
<em>According to the passage, bacteria help us digest our food and make yogurt. But it is the bacteria in the soil specifically that "Cycle nitrogen through the ecosystem, which plants rely on"</em>
Helium bc when u vape it goes into it lungs but also bringing helium at the same time.
O2 is the limiting reactant
Magnetizing steel is a physical change, not a chemical change.
Most scientific questions are developed from Observations.