1) When a star's temperature or size increases, its luminosity increases. In other words it seems more bright.
2) The electromagnetic spectrum is used to determine different types of light waves (infrared, visible light, x-rays etc.) which produced by different kinds of astronomical objects.
Sharp claws of eagle help in adaptation because it helps them hold on to their prey during flight. They also help to kill it.
Answer:
these are called Metalloids. They touch in between the metals and non-metals
Explanation:
The first one i think it is the first one