<h2>
Answer:</h2>
1: Bhopal Gas Tragedy, India
2: Deep Water Horizon Oil Spill, Gulf of Mexico
3: Chernobyl Meltdown, Ukraine
4: Fucushima Meltdown, Japan
5: Global Warming, The Third Planet from the Sun
<h3>
Explanation: on number 4 it is a "k" instead of a c it just didnt let me answer it like that.</h3>
Answer: Atrioventricular valves
Explanation:
These are the mitral and tricuspid valves, which are suit between the atria and the ventricles and prevent back flow from the ventricles into the atria during systole. The function of the subvalvular apparatus is to keep the valves from prolapsing into the atria when they close.
I believe you are looking for the answer healthy people.gov
