Why the walls of left ventricles are thick as compared the wall of right ventricles?? please help me

How was the climate when the ambulocetus was alive

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

Give the biological term for: structures that display characteristics of living organisms only within living cells