Answer:
gives the background and purpose of an experiment.
Explanation:
Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.
The introduction in a science text gives the background and purpose of an experiment.
C is the answer
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Explanation:
You didn't give us the text bro! I can't answer it without the text!
Answer:
15. Un compuesto químico se puede representar gráficamente por medio de una
Explanation: