If we will base our answer on Hertzsprung diagram, we
will see that mass and luminosity are directly related, which means, long lived
stars begin their lives with more mass and a larger amount of hydrogen fuel,
hence hydrogen is abundant before than now. They are more luminous during their
main sequence lives. Giant stars and supergiant
stars have great masses, so, they have greater luminosities.
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Answer:
Tropical
Explanation:
The northern countries of South America experiences a tropical climate. These regions are notably close to the equator belt of the world.
- The seasons are the dry and wet periods in the year.
- Rainfall is occurs in most of the months in a year.
- Some of the countries in this belt are Suriname, Ecuador, Brazil and Bolivia.
- The world's largest rainforest belt is located in this region
Answer:
between North America and South America (dividing the Americas): at some point on the Isthmus of Panama
Loess is a darker more fertile soil. Sand is dry and unfit for farming
Answer:
three.
Explanation:
Types of Galaxies
Astronomers classify galaxies into three major categories: elliptical, spiral and irregular.
