What is eutrophication?Explain its conseuences on the life of plants and animals living in such water. Why is oxygen depletion in a eutrophicated water body is faster at night than during the day?

Create an aquatic food chain in a water body into which effluents flow from a pesticide factory. Diagrammatically represent biomagnification in this food chain Explain why a decline in the predator bird population is expected when its feeds on the tertiary consumer of this food chain.

Trichloromethane or chloroform is a colourless oily liquid with a peculiar smell. It is sparingly soluble in water. The vapour when enhaled cause unconsciousness and therefore, it is used as an anaesthetic. Answer the following question : What happens when chloroform is not protected from oxygen during its storage?

A gardener forget to water a potted plant for a day during summer. What will happen to the plant? Do you think it is reversible? If yes, how?