What is a chemical element that is found in the air and is a colorless, odorless, and tasteless gas that is necessary for life?

What are tiny single-celled organisms that can be found on, in, and around most living and nonliving things?

What is a single particle of matter that is made up of two or more atoms and are joined chemically?

What is the definition of hydrogen?

What is the definition of organism?

What is the definition of oxygen?

What is a colorless, odorless, and tasteless flammable gas that is the lightest of chemical elements?

What is the definition of bacteria?

What is the definition of molecule?

What is a living thing made up of one or more cells and is able to carry on the activities of life?

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