What are corals?

What are porins? What role do they play in diffusion?

Why are coral reefs not found in the regions from West Bengal to Andhra Pradesh but are found in Tamil Nadu and on the east coast of India?

Why are coral reefs not found in the regions from West Bengal to Andhra Pradesh but are found in Tamil Nadu and on the east coast of India?

What are beats? What is beat frequency?

What are fossils? What is the importance of fossils in organic evolution?

What are tears, and what are their functions?

What are chromosomes? What are they made of ?

What are villi? What is their function?

What is a wave ? What are elastic waves ?

What is an error? What are constant errors?