Which organism contains organ systems?
A. pig
B. amoeba
C. bacterium
D. paramecium
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Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

Select the correct answer. what does the process of natural selection involve?

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?