I would put d. because we can affect some but some are also genetic
Answer:
D
Explanation:
You want to be interested in what your writing, but you also want your readers interested too.
Answer:
During combustion or burning, carbon from fossil fuels combine with oxygen in the air to form carbon dioxide and water vapor. These natural hydrocarbon fuels come from once-living organisms and are made from carbon and hydrogen, which release carbon dioxide and water when they burn.
My personal, tentative wild guess is: <em>apnea</em>
The cause is "aerobic exercise" and the effect is "more endurance". The word "gives" indicates that aerobic exercise causes something to happen.
