Question

the biosphere is made of different kinds of matter. which substance is an example of inorganic matter? a. carbon dioxide b. protein c. sugar d. carbohydrate

Explanation:

Inorganic substances typically lack carbon - hydrogen bonds. Carbon dioxide ($CO_2$) is an inorganic compound. Proteins, sugars, and carbohydrates are organic compounds containing carbon - hydrogen bonds and are essential for life processes.

Answer:

A. Carbon dioxide