Question

what could cause a species to go extinct? when a species is unable to keep up with changes in the environment a new food source exclusive to this species the introduction of new alleles into a population

Explanation:

When a species can't adapt to environmental changes (e.g., climate shifts, habitat loss), it lacks suitable conditions for survival and reproduction. A new exclusive food source would likely aid the species (more resources). Introduction of new alleles (genetic variation) can enhance adaptability (not cause extinction).

Answer:

when a species is unable to keep up with changes in the environment