Prepare slogans on Greenhouse Effect to announce in your school assembly (AS 7)

How human activities caused an imbalance in biogeochemical cycles? (AS 7)

List three ways we, as humans, have affected the water cycle. (AS 7)

Describe interdependence of biotic and abiotic components by taking Nitrogen cycle as an example. Draw Nitrogen Cycle. (AS 5)

Go to a nearby pond observe organisms living in the pond and bio degradable substances mixing in water. How they effect on those organisms? Write your observation. (AS4)