Answer:
it's A endothermic its when two objects rub each other to form heat this is also known as friction force
From n = t/T, you get nT = 8.00 times 2.30 days which equals 18.4 days.
Your answer is 18.4 days
1. Yes because the ocean takes in the carbon dioxide from the air. This causes more acid in the water, this makes it hard to make shells and skeletons for the seal life that need them.
2.No because it isn't harmful unless it builds up. But there is people who work to clean and limit the chances of build-up.
Hope this helps :)
2. Increased activity
Heart goes up when you start moving around and start being more productive
