What is a limiting factor?

Name three limiting factors of photosynthesis.

Why does the rate of photosynthesis speed up when light intesity increases?

What would a graph to show the rate of photosynthesis against light intensity look like?

What happens to the rate of photosynthesis and enzymes if it gets too cold?

What happens to the plant if the temperature gets too hot?

What would a graph showing rate of photosynthesis against temperature look like?

What happens to the rate of photosynthesis as carbon dioxide concentration increases?

What would a graph showing carbon dioxide concentration against rate of photosynthesis look like?

If the light intensity and carbon dioxide are at a constant, what must be the limiting factor and why?