How can we improve the beneficial bacterial count in human beings?

Write the economic importance of Gymnosperms.

 Explain the mechanism of breathing.

How do astronauts breathe when they go beyond earth’s atmosphere?

How can we prove that the electrons carry negative charge?

What is a streamlined body? How does it help in the movement of animals that fly or swim in water?

Adolescence is the energistic stage. What health and good habits you want to develop?

Describe the structure and function of the human ear?

Write a note on Earth’s magnetism.

Write a note on Apollo missions.

What is Electrolysis? Explain the electrolysis of water.

Explain the neutralization reactions in our daily life.

What are the different types of fuels?

What is a weed? Explain the different methods of weed control.

Write about the types of conservation.