A) To start
B) Deliberate
D) To authorize somebody
A) Sea water is still while river water is running
B) Salinity of sea water is more than that of river water
C) Density of sea water is more than that of river
D) None of these
A) They have sharp eyesight
B) They can run very fast
C) They can hear ultrasonic waves
D) They are easily trainable