Rotation is the spinning of a planet, revolution is when a planet circles the sun/planet.
Water is the source of life. Without it no life on earth would existed. It is tasteless and without smell and colourless. It's chemical formula is H2O.
The answer is b. the rotation of the earth on its axis
Explaination;
the earth spins (or rotates) on an imaginary line called its axis and different parts of the planet are facing towards the Sun or away from it
Answer:
Good environmental decisions need to have scientific facts thus in order to make informed decisions,policy makers are advised by letter C. Environmental scientists. In addition, not only scientific means is needed to have a good environment but also should include the economic,social and ethical aspects.