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by how long it is
The three characteristic are temperature, size, and brightness.
There shape, if they need oxygen, and where they live.
Combustion, Syntheses, and Decomposition
Isosceles, equilateral, right angle, obtuse and scalene
Of course, you can classify them in different ways. One important way to classify them is their mass; it is basically their mass that defines the star's evolution. But you can also classify them according to their temperature, radius, age, metallicity, etc.
i think u can classify it in 2 ways
elementary school,middle school and high school,university
Two different ways to classify mollusks are by the muscular foot located inside of their bodies. They have three different types of feet, the head foot, hatchet foot and the stomach foot.
The seven different ways to scientifically classify plants: APG system, APG II system, APG III system, Bessey system, Cronquist system, Melchior system.
There are many ways to claasify stars but the simplest and most common ways are by 1. size 2. age 3. temperature and more so, a combination of these.
3 ways to we can classify solution