Question

1. choose the best answer. what is known as the element of life? hydrogen galactose carbon oxygen 5) choose the best answer. a(n) ____ occurs when two or more atoms or molecules combine to make new molecules with different properties. nucleic acids amino acids response chemical reaction

Explanation:

1. Carbon is known as the element of life because it can form a vast variety of complex organic compounds essential for life - processes.
2. A chemical reaction occurs when two or more atoms or molecules combine to form new molecules with different properties. Nucleic acids and amino - acids are types of molecules, and a response is a general term not specific to this process.

Answer:

1. carbon
2. chemical reaction