Answer:
In heart valve disease, one or more of the valves in your heart doesn't work properly. Your heart has four valves that keep blood flowing in the correct direction. In some cases, one or more of the valves don't open or close properly. This can cause the blood flow through your heart to your body to be disrupted.
Answer:
Yes it does for example the science room has the materials to be safe during school.No because there is still the covi going on and some students aren't taking it seriously.One concerne that I have is that if they need help with their studies their should be tutoring
The DNA tells a ribosome how to assemble a protein.
