The answer to the question is B.
Answer:
Vacuum
Explanation:
A vacuum is usually defined as a space in which there is an absence of matter. It can also be said that there is an extremely low amount of pressure due to which the particles present in it are not affected by any type of process that occurs in space. The value of pressure is lower than the value of normal atmospheric pressure.
For example, sound cannot travel in space because there is no medium such as water and air through which the sound waves can propagate.
Answer:
An interglacial period is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periods within an ice age.
Explanation:
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chemical changes cannot be reversed because you cannot take a chemical out of another chemical change. it is impossible. EX: water+food coloring= you cant take the food coloring out of water.
Answer:
Moons
Explanation:
The things that orbit planets are termed as moons.
