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1. MULTIPLE CHOICE. Encircle the correct answer 1. It is a part of the air that surrounds us. It is used by the body to continue life. It also has effects on different materials. a. Oxygen b. Carbon c. Nitrogen 2. The process that happens when metal got rusted when exposed to oxygen a. Oxidation b. Carbonization c. Nitrogenization 3. People and animals use oxygen in respiration. As oxygen is inhaled, some materials inside the body combine with it and undergoes a. chemical reaction that gives off carbon dioxide, water and energy. b, physical change c. harmful substances​

Sagot :

Answer:

1. a

2. a

3. a

Explanation:

correct me if I'm wrong

Answer:

1.A

2.C

3.A

Explanation:

pa follow sure na po yan nasa answer key po:)