They have very sharp teeth to cut through their prey, or try to escape if they are trapped
Their bodies are very narrow, enabling them to be very quick and nimble, it also enables them to hide it tight spaces
Their teeth also enables them to escape a fishermen's line ( I'm a fishermen and I've lost many barracuda due to those teeth.)
I hope this helped
Im like 98% sure its B because ultra sounds hear the frequency's of the baby in the womb
Answer:
Question 1=To make sure your body can work correctly, even when it does many things at once,
Question 2= It helps your blood flow while you are eating it also helps digest and when in danger it also helps send signals to your brain.
Explanation: