Answer:
Panic attacks typically begin suddenly, without warning. They can strike at any time, when you're driving a car, at the mall, sound asleep or in the middle of a business meeting. You may have occasional panic attacks, or they may occur frequently.
Explanation:
Hope this helps
Answer:
I believe it is cardiovascular since they all involve the heart
Answer:
50%
Explanation:
It's a 50% chance that a baby will be either male or female. The egg has XX chromosomes and the sperm has XY.