Name TWO by-products that are produced during this process.

The question asks to name two by-products produced during "this process." Based on the previous questions about exhaled air and carbon dioxide, "this process" refers to cellular respiration.

Step 1: Identify the process. The process in question is cellular respiration, which is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy into life-sustaining activities and discarding waste products such as carbon dioxide and water.

Step 2: Recall the reactants and products of cellular respiration. The general equation for aerobic cellular respiration is: $\text{Glucose} + Oxygen \rightarrow Carbon Dioxide + Water + \text{Energy (ATP)}$ In this reaction:

• Reactants are glucose and oxygen.
• Products are carbon dioxide, water, and energy (ATP).

Step 3: Identify the by-products. The primary purpose of cellular respiration is to produce energy (ATP). Therefore, carbon dioxide and water are considered the by-products of this process.

Step 4: Evaluate the provided answer. The answer written on the paper is "glucose and oxygen." Glucose and oxygen are the reactants of cellular respiration, not the by-products.

The correct by-products are:

• Carbon dioxide
• Water

The final answer is $\boxed{Carbon dioxide and Water}$.