Galaxy, solar system, star, planet, moon
An element is also a pure substance. The reason for this is because an element contains only one type of particle.
Option A is correct
Answer:
skynesher / Getty Images. The dependent variable is the variable that is being measured or tested in an experiment. For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is what is being measured.
Explanation:
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Energy input would be what's giving the source energy. Energy output is what energy it's giving out.
