The aortic valve is the final door blood goes through as it exits the heart. Obstruction of that valve is called stenosis and leakage of the valve as it closes after each heartbeat is called regurgitation
Examples of direct impacts are things such as littering or planting an invasive plant in an area it doesn't belong.
An indirect impact may be something like how much water your family uses when they use the washer to wash clothes.
I hope these examples help you come up with your 10!
Most reasonable answer is because computers hold larger amounts of data.
Yes. Found in most animal cells and plant cells. It is responsible for cell respiration and the release or storage of energy in readily useable form.
Answer:
1/ Climate change
2/ Asteroid impacts
3/ Massive volcanic eruptions
4/ Sun explodes
etc. (all the things above are most likely to happen but alien invasion or things like that is also a theory that you can add depends mostly if you like it or not)
