1)    How does pollution affect photosynthesis?



1. Dry deposition of particles and gases on the plant decreases the photosynthesis. But nitrogen deposition is good for plants.
 
2.Acid rain is hazardous to the plant health.

Pollution (particles present in the atmosphere) increases the diffuse radiation and this increases photosynthesis.

Also another important factor in photosynthesis and plant like is soil, with soil being polluted plants can not grow.  

• Soil pollution impacts photosynthesis at the root level. Acidic rain caused by fossil fuel emissions increases the acidity of soils which causes a chemical to occur, creating toxic aluminum ions. These ions impede the plant's ability to take up nutrients, thereby slowing the process of photosynthesis and the overall growth of the plant.

Also not only soil can effect the way the plant grows but also something called the "Greenhouse Effect"

• Ground level ozone created by the greenhouse effect can create unfavorable conditions for photosynthesis to occur. Concentrations of greenhouse gases such as carbon dioxide prevent the release of radiant heat from the environment. Surface temperatures rise, increasing the rate of evaporation. Water becomes a limiting factor. To conserve precious resources, plants will close their stomata, reducing the availability of carbon dioxide to the plant. With limited carbon dioxide and water, photosynthesis slows

There are also many other ways plants cant make food for themselves.