The materials with lower density are called _________

The materials with higher density are called _________

The materials with higher density are called _________

Reactors that converts fertile material into fissile material are called _____________.

Mass of the fissile material at the critical size is called______________.

The lines having frequencies lower than the incident frequency is called ___________ lines.

The two lower thick walled chambers of heart are called _______.

The materials which are attracted towards the magnet are called____.

In mature vascular bundle of monocot stern, the lower most protoxylem disintegrates and form a cavity called __________ .

The lower jaw bone is called ..