Light intensity, carbon dioxide concentration and temperature are three factors that affect the rate of photosynthesis. How would you investigate the effect of light intensity on the rate of photosynthesis?

Explanation:

The effect of light intensity on photosynthesis can be investigated in water plants. the light intensity is proportional to distance it will decrease as the distance away from the bulb increases so light intensity for the investigation can be varied by changing the distance from the lamp to the plant.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.