Habitats of the organisms respectively are 

An environmental problem caused by Sulphur (IV) oxide is 

The phenomenon by which a farmland that is left to fallow for several years develops into a forest is called

A farmer planted many seeds on a small piece of land. The plants that germinated are as shown above.

Which of the following effects would not be observed among the population of the plants?

The bar chart above shows the data of sources of energy used for cooking in a community. Study it and answer questions 37 and 38.

The source of energy that is mostly used in the community is