Answer:
The spectral types and sub-classes represent a temperature sequence, from hotter (O stars) to cooler (M stars), and from hotter (subclass 0) to cooler (subclass 9). The temperature defines the star's "color" and surface brightness. ... Stars are also classified by luminosity class.
Explanation:
The main reason why Earth is warmer at the equator than at the North and South Poles are thats where the sunlight shines at a lot of times. The sunlight never really shines directly at the North and South Poles like it does with the equator.
Answer:
It changes the angle.
Explanation:
Seasonality affects the angle of the sun above the horizon by making it higher in the summer and lower in the winter.
The tilt of the Earth is responsible for the seasons and for the angle at which the solar rays make contact with any given point on the globe during a certain season.
In summer, the Sun is closer to the overhead position, while in winter the Sun is lower on the horizon.
The first word is Sink and the second is denser