What is ozone? How does it protect the organisms on the earth?

What are nastic and curvature movements? Give one example of each.

Updated 1/12/2026

What is reflex action? Explain the mechanism of reflex action with a suitable example.

Updated 1/12/2026

Name any two abiotic components of an environment.

Updated 1/12/2026

What are two main components of our environment?

Updated 1/12/2026

Name one sexually transmitted disease each caused by a bacterial infection and viral infection. How can they be prevented?

Updated 1/12/2026