I believe it’s consist of mainly collagen
Answer: A
Explanation: mental illness despite being helped with meds, don't typically go away.
Answer: there is no change in cardiac output, increased heart rate, decreased stroke volume
Explanation:
Generally speaking, If you donate 500ml of blood, it is not a big deal and it is blood that your body is going to recover within some time.
No u shouldn't leave it open.
It can be really dangerous.
For example: It might sound crazy but imagine a rodent eating the hose that the gas passes through,the gas leaks and dangerous things can happen cuz propane is flammable especially when mixed with air(oxygen).