theme – n. the main subject or issue that is discussed often or repeatedly

hire – v. begin to employ someone

exploit – v. to use (someone or something) in a way that helps you unfairly; to abuse someone

reciprocal – adj. used to describe a relationship in which two people or groups agree to do something similar for each other

undermine – v. make someone weaker or less confident

solar panel – n. a large, flat piece of equipment that uses light from the sun to create electricity
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