Answer: B. It speeds up your heart rate to help you deal with danger.
Explanation: When you feel you are in danger, your heart rate goes up to get you ready to run, you pump out more adrenaline, and you are more alert. Also, all the other answers are just wrong. In A you would pay more attention, C is the opposite, and in D you would not need to hear when your body is resting.
I hope this helps!
A, observations.. You don't come up with conclusions before hypotheses, and the contact with other scientists is just a dumb answer
Answer:
yes I can confirm your answer is sexual
A:110 B:40 C:10 but good job on B
Man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use
