Which type of speciation occurs when a physical or chemical sign is required before a species will mate? temporal behavioral hybrid sterility gametic?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Solutions to environmental problems in europe must

When is your breathing likely to speed up? a. when your white blood cells increase b. when your cells need more energy c. when your heart cells need more carbon dioxide d. when your blood cells have too much oxygen