Answer:
Light source
Explanation:
The Sun is a light source because it releases energy from inside itself. The Moon isn't a light source. It doesn't produce energy inside itself, and instead just reflects light from the Sun.
Answer:
1kW = 1000W
600W = 0.6kW
Cost of electric bill = 0.6kWh × 24 × 30 × $0.05
= $21.60
Answer:
Because in higher altitudes atmospheric pressure is low
This is a very valid hypothesis for many reasons. One is that solar systems form from massive amounts of dust, ice, and debris that eventually form into planets and such. This means it is very possible for this 'excess material' if you will to have moved into orbit behind Neptune.
I think this is the answer:
<span>Matter can change its state because of the pressure and/or the temperature.</span>
