Because Earth orbits around the sun, causing the position to seemingly change as the Earth moves. Orion can't be seen in summer because it appears when the sun is out. The reason it doesn't appear at night is because the earth is titled differently on it's axis then in, say winter.
I hope this helps you out.
It would probably be D. because that would be a waste of the water, and it's not helping conserve it.
Answer:
B
Explanation:
B is the most likely region that contains alkaline earth family elements.
Answer:
The total energy of the object does not change is the true statement.
Explanation:
1. The force applied to the object is perpendicular to the movement so doesn't work on it, assuming the table is at the same height in all of its points the only energy we have to analyze is the kinetic energy , because the table top is frictionless by Newton's first law the velocity (v) doesn't change so the kinetic energy is constant and the total energy too.
2. There's no friction in this situation
3. As stated on 1. because the applied force is perpendicular to the movement of the object, there force doesn't work on it.
4. There are over one force on the object, the weight and the normal force table top exerts to the object.
So the only true statement is 1.