What do bases have in common?

What do acids have in common?

(a) What property do all elements in the same column of the Periodic Table as boron have in common ? (b) What property do all elements in the same column of the Periodic Table as fluorine have in common ?

Why do leaves have stomata?

The bases that are common in both RNA and DNA are

The angles having a common arm and common vertex are called_____angles.

The condider alpha of a transistor is 0.9 .What would be the change in the collector currnt corresponding to a change of 4 mA in the base current in a common emitter arrangement>