1.Collect the pictures of new agricultural machines and paste it. Write the name and uses.
2.Make a table which shows some common human diseases and plant diseases. Write down the preventive measures.
3.Collect the pictures of different microorganisms and label it.
4.Explain the different methods of food preservation.
5.Write 10 lines on the usefulness of microorganisms in our lives.
Ms K.C. Ushadevi, TGT (Sc)
Ms Susan George, TGT (Sc)