Question

an example of mitosis at work is a leaf turning yellow. growing. taking in carbon dioxide. performing photosynthesis.

Explanation:

Mitosis is a type of cell - division that leads to growth and repair. A leaf growing is due to the process of mitosis as new cells are produced through this cell - division process. A leaf turning yellow is related to changes in pigments like chlorophyll breakdown. Taking in carbon dioxide is part of photosynthesis and not directly related to mitosis. Performing photosynthesis is a metabolic process for energy production and not an example of mitosis.

Answer:

growing