<span>When a person is making cardiovascular gains through aerobic activity they are increasing the amount of oxygen to the heart and lungs. This actually keeps the heart and lungs of a person very healthy. It decreases the chance of heart diseases. I hope the answer has come to your help.</span>
Answer:
When operating power tools
Explanation:
The answer is B: second degree burn.
It's not A because there wouldn't be blisters from a first degree, and it't not C, because a third degree burn wouldn't hurt because it would've melted your nerve endings, and it's not D because there is no such thing as a fourth degree burn. Hope this helps!
You could probably use heat or cold things