What does `_Z^A X` represents?

What does a wave represent ?

Aryan stretched a rubber band. What does it represent?

Refer the given figure. What does it represent?

What does each bar represent in a pyramid of number?

Observe the following diagram. What does it represent ? Explain the process in a flow-chart.

It- (I) Liver - Liver lobule II. kidney- Uriniferous tubule III. Ecolog:y - X then what does"X" represent ?

What is a trophic level? What does it represent in an ecological pyramid?

What is a trophic level? What does it represent in an ecological pyramid?

What does 'K' represent in the equation given below? (dN)/(dt)=rN((K-N)/(K))

What does this diagram represent?