(07.02 mc) what would happen if the valves separating the chambers in a person's heart did not close?

This is called valve stenosis or narrowing. This can put extra strain on your heart, making it pump harder to force the blood past the narrowing. If the valve does not close properly, it will allow blood to leak backwards. This is called valve incompetence or regurgitation or a leaky valve.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

there’s no image attached but i can if you want: )