question: What sentence would provide a factual answer to this question: "A computer needs what to be functional"

answer: electric devices require electrical energy to function

question: What sentence would provide a factual answer to this question: "When the availability of food sources increase in an environment, what will also increase?"

answer: as the number of sources of food increase in an environment , the population of the organisms will increase in that environment

question: What sentence would provide a factual answer to this question: "A deer eats plants, which are producers, and they also"

answer:
a producer is a source of sugar in an ecosystem