I need short definition for each of these. 1. hypertension
2. hypotension
3. bradycardia
4. bradypnea
5. tachypnea
6. tachycardia

For the first one I think it might be high blood pressure or HBP

Explanation:

Hypertension~high blood pressure

answer:

i don't believe the ocean is purple, but it might once have been:

as for the sky, according to nasa:

"sunlight reaches earth's atmosphere and is scattered in all directions by all the gases and particles in the air. blue light is scattered more than the other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time."

answer:

cry and then a deep breath and breathe. let all your emotions out the way you need to, weather that crying a bunch or screaming do it then breath and remember it'll be okay.

explanation: