Question

1. to be classified as organic, a chemical’s molecules must be ______

○ living
○ decomposed
○ based on carbon
○ based on oxygen

Explanation:

Organic compounds are defined as chemical molecules that contain carbon covalently bonded to hydrogen (and often other elements), so their molecular structure is carbon-based. Non-living carbon-containing molecules (like methane) are still organic, decomposition is not a defining trait, and oxygen is not required for classification as organic.

Answer:

based on carbon