Answer:
I think D.
Explanation:
The substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more different the properties are, the easier it is to separate the substances.
Yes there are. Perhaps the most famous and obvious is squaric acid.
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Answer:
A red giant is a luminous giant star of low or intermediate mass in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around 5,000 K or lower.
The answer would be E, it shows students how the different environments appear, since you can visually see it.
Answer:1
Explanation: friction is showing us how in the past
