Answer: 1) Increasing carbon dioxide levels may increase photosynthesis rates in some plants.
2) Plastic debris that builds up at or near the water's surface impedes sunlight from fully reaching plants below Plants rely on energy from sunlight to drive the photosynthesis process and create glucose food molecules.
3) A significant effect haze has on plants is that it blocks light, which reduces a plant's rate of photosynthesis. Lower photosynthetic ability, in turn, reduces plants' ability to grow.
There is the Answer.