Biotic components of ecosystem are

Name two abiotic components of environment.

What are trophic levels? Give an example of a food chain and state the different trophic levels in it.

There is an increase in the atmospheric temperature year by year. If it continues, guess and write what could be the consequences?

Recent studies showed that the yield of Sunflower is considerably come down. What is the reason?

Name the plant that is used to make the soil Nitrogen rich.

Give reason:

Decomposers play an important role in an ecosystem.

Study the food chain below, correct it and convert it into a pyramid of energy.

$Mulberry\to Sparrow\to Caterpillar\to Kite.$