Solar thermal energy and solar electric energy because people like to conserve energy and help the earth so they use solar thermal energy. But people who are not enough nice to the earth they would use solar electric energy
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Answer:
Parasitism: one species is benefitted and the other is harmed. So it is a negative interaction.
Commensalism: One species is benefitted while the other is neither harmed nor benefitted.
Mutualism: Both the species are benefitted by the interaction.
Explanation:
Parasitism is negative interaction
Commensalism and mutualism are positive interactions
