Answer:

1.H2O

2.Oxygen

Explanation:

1.Because it is important to us and to those animals and living things in this world

2.Because it is what we need to breathe and to survive in our daily life

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Answer:

1.The study of elements and compounds is called “chemistry”. It is the basis of your body, your food, and many of the products of our daily life, but not everybody needs to know the details. You should study chemistry if you want a job that requires a knowledge of it, or just are curious about it.

I can make a case that the average person could benefit from a little bit of chemical knowledge, but the average person actually has virtually no such knowledge, and you'll get along as well as most people without any.

2.Elements are important because the so-called bulk is in our bodies. These are carbon, hydrogen, oxygen, and nitrogen—the reason why our body functions well are because of the result of chemical reactions. In comparison, compounds are essential since we use them in our daily living like food and water.

Explanation:

Both elements and compounds are essential in supporting the way of living things. And having an understanding of these two has a significant impact on us in studying. It will help to determine the particular element or compound used.

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