Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
Hi,
Which action can lead to intentional injuries ?
- being in a domestic fight
It means that they are near sighted. I know this because I am also near sighted. Which makes it hard for me to read road signs from a far away distance sometimes. Hope this helps!!!
<span>The respiratory system of the body can be injured by volcanic ash that comes from a volcanic eruption. You can inhale this ash and it can get into your body and system and mess with your inner organs. I don't see how this can happen with boulders and rocks, as they are way too big to be inhaled the way ash can be.</span>
Infertility, impotence and sexually transmitted infections
