*With the help of an activity demonstrate that photosynthesis is affected by light.
*Discuss about acid rain and it's harmful effects.
On a map of India.mark the place that are most vulnerable for occurrence of cyclones and tornadoes if any.
*Draw a well labelled diagram of human intestinal system.
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Acid rain can be extremely harmful to forests. Acid rain that seeps into the ground can dissolve nutrients, such as magnesium and calcium, that trees need to be healthy. Acid rain also causes aluminum to be released into the soil, which makes it difficult for trees to take up water.
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