Anyone know the answer to this biology question?

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

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

What is a general feature of a species that varies from one individual to the next (skin tone, eye color or hair color)? a. organism b. trait c. character