That's what is called competitive enzymatic regulation. If there are more of that substance than the enzyme substrate, then most of the enzyme, if not all depending on the substance's concentration, will be inhibited on its action. If there are more substrate then the competitive substance, the expected reaction for that enzyme will happen at an expected rate. If the ratio substrate:substance is 1:1 then the reaction enzyme-substrate is very slowed down.
Algae and cyanobacteria are photosynthetic procedures, along with photosynthesis
Answer
150 metres
Explanation
The plate moves at a rate of 3cm/year
In 5000 years, the plate would have moved:
3cm • 5000 = 15000 cm
Convert from cm to m (100cm = 1m)
15000 / 100 = 150
Answer is therefore 150 metres
