What is the estimated amount of waste (in kg) generated by each person in an urban area every day?

What will happen if deer is missing in the food chain given below?
Grass $\rightarrow$ Deer $\rightarrow$ Tiger

In a food chain consisting of grass,insect,frog,and snake,what is the trophic level of the frog?

The green plants capture about $10 \%$ of the energy of sunlight that falls on their leaves and convert it into food energy.

We do not clean ponds or lakes,but an aquarium needs to be cleaned. Why?

State one important function of ozone layer in the atmosphere. How is it formed there? Which compounds are responsible for the depletion of ozone layer? How do these compounds enter into the atmosphere?