Answer:
As latitude increases it gets colder and can even snow.
Explanation:
Alright here's the basic explanation. As your latitude increases the colder/snowier it will be and the lower latitude will have warmth, and a lot of sun.
The warmer the star, the bluer it will appear. The cooler a star, the more red it will appear.
Proxima Centauri Red Dwarf Stars for example have significantly less heat, therefore their red color.
It is definitely not a primary source: this would be a book itself.
Now, is it a tertiary source? I don't think so: the author of the review should have read the book and should only be referring to this book in the review.
I think it's a secondary source.
By the amount layers the epithelial tissue has
