The lighted part of the moon appears to change shape when viewed from the Earth because

Question 1 options:

Of the shadow cast from the Earth on to the surface of the moon

the sun goes out at different times of the month

Justin Bieber was having a world tour and redirected the sun's rays to replace his stage lighting.

the moon rocks need to recharge

Apossible long term health effects of stress would be work

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.

The inference is supported by evidence in the graph is this is an exothermic reaction where the total release of energy equals a + c.