The atria of the heart merely need to allow blood to flow into the ventricle, and therefore aren't very muscular.
The ventricles of the heart need to actually pump blood to the rest of the body, whether to the lungs or the the rest of the body.
Sounds like a multiple choice question, may I have the options?
1 ) under water earthquakes cause a disturbance sending water outwards away from the point of the earthquake due to air and pressure coming into contact at gray force
A decline is a situation in which a security's price decreases in value over a given trading day and subsequently closes at a lower value than its opening price!!
Answer:
When animals eat their food combine with oxygen, which produces energy for the animals to use for everyday activity and then gives off carbon. The carbon then combines with the oxygen to form carbon dioxide, which is then released back into the atmosphere as waste product when the animals breath.
Carbon Dioxide (CO2)
Hope this helps ;)
