Answer:
Because the Moon casts a smaller shadow than Earth does, eclipses of the Sun tightly constrain where you can see them. If the Moon completely hides the Sun, even for a moment, the eclipse is considered total.
Explanation:
(D)
Explanation:
The more massive an object is, the greater is the curvature that they produce on the space-time around it.
Answer:
Voltage-gated calcium ion channels open, and calcium ions diffuse into the cell
True, because it is the state between solid and liquid
A free electron is one which has become detached from a covalent bond between two atoms and is able to move around from atom to atom and possibly take part in electric current flow.
