The earths lithosphere is 70-100 kilometers thich
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Valence shell
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
Physics, there are three types of main muscles, skeletal muscle, cardiac muscle, and smooth muscle, but it's physics that makes all these muscles contract, thus movement. So it's Physics that plays a big role in muscle movements.
True. if it is a true/false question the answer is True.