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 results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus. It is involved in growth and repair processes. A leaf growing is due to the division and proliferation of cells through mitosis. A leaf turning yellow is a process related to pigment - breakdown, taking in carbon dioxide is part of photosynthesis, and photosynthesis is the process of converting light energy into chemical energy.

Answer:

growing