Answer:
B: Parts could be used for different machines
Explanation:
I’m not 100% sure but I think it is B; rainforest ( but I may be wrong )
A theory is an interrelated, coherent set of ideas that helps to explain phenomena and make predictions.
<h3>What is theory?</h3>
Theory consist of various ideas that are related.
It is often used to explain a process, phenomena or an idea situation.
Theories are postulated by scientists for various observations and reasoning.
They are principles that explain a group of facts and it is used to explain things or happenings.
Therefore, A theory is an interrelated, coherent set of ideas that helps to explain phenomena and make predictions.
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