Question 9 7 pts
A group of students toured a limestone cave in northwest Georgia.
Which of these best explains how the limestone caves in Georgia
were formed?
O Plant roots split the rock.
O Acidic water dissolved the rock.
Animals burrowed into the rock.
Ice formed and broke up the rock.
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i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

b is the answer and if you need further with anything message me