Generate a sentence that answers this question: "What has a positive net impact on an environment?".

Answer: planting trees has a positive impact on an ecosystem

Generate a sentence that answers this question: "Where would a greenhouse best be used?".

Answer: a greenhouse is used to protect plants by keeping them warm

Generate a sentence that answers this question: "A person in a suit near a sunken ship is sprayed in the face with a dark substance by".

Answer:
ink is used for hiding from predators by octopuses