Discuss the gross primary productivity is more efficient than net primary productivity.

Construct the food chain with the following data.
Hawk, plants, frog, snake, grasshopper.

Name of the food chain which is generally present in all type of ecosystem. Explain and write their significance.

Shape of pyramid in a particular ecosystem is always different in shape. Explain with example.

Generally human activities are against to the ecosystem, where as a student how will you help to protect ecosystem?