What might be some possible issues of increasing heat waves?

Extreme heat can cause cramps, swelling, and fainting. Heat waves kill more Americans than other natural disasters such as floods, lightning, tornadoes, and hurricanes. Heat exhaustion is a relatively common reaction to severe heat and can include symptoms such as dizziness, headache and fainting. But when sustained heat waves hit a region, the other health ramifications can be serious, including sunstroke and even major organ damage due to heat.  Heat stress, or when too much heat, is absorbed by the body can cause extreme exhaustion but can also mess with our thinking, making things like everyday tasks and simple math a little harder to do.

it's d - life cycles - apex