14. is a and i think 15. is b
<u>Answer :</u>
Part 13:
The balanced chemical reaction will be:

Part 14:
The balanced chemical reaction will be:

Part 15:
The balanced chemical reaction will be:

<u>Explanation :</u>
Balanced chemical reaction : It is defined as the reaction in which an individual element of an atom present on reactant side must be equal to product side.
Part 13:
The balanced chemical reaction will be:

Part 14:
The balanced chemical reaction will be:

Part 15:
The balanced chemical reaction will be:

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>
I really hope this helps I’ve been there too and I’m just doing this so I get the 20 words and I have the picture
B A C ( Blood Alcohol Content ) of 0.10 means that there are 0.10 g of alcohol for every dl of blood.
5 L = 50 dl
50 * 0.10 g = 5 g
In his blood is circulating 5 grams of alcohol.