I am pretty confident that the answer is D) mouthpieces for breathing. This is the only way they can stay underwater for long periods of time. If they came up every 10 seconds for breath, they would waste a lot of time.
I hope I helped you!
That is true.
It is a natrual cause of mental deficiency.
I hope this helped you.
Brainliest answer is always appreciated.
Answer:
penis
Explanation:
I took health a couple years ago, if I remember correctly it's penis
Physical activity is helpful for your heart muscle and also strengthens your immune system also good for your lungs and helps maintain your weight <span />
