Answer:
Ann atom of hydrogen consists of one proton surrounded by one electron
Grass, plants, flowers, trees, stumps, that kind of thing or not?
Answer: B. Blood would leak backwards through the damaged valves due to gravity, causing lower leg swelling.
Explanation:
The human heart consists of four chambers that are two atria and two ventricles. The valves helps in the unidirectional flow of blood from the upper chambers to the lower chambers. They prevent the backward flow of blood. There are four heart valves :
1. tricuspid valve: it lies between the right atrium and right ventricles.
2. mitral valve: it lies between the left atrium and the left ventricle.
3. pulmonary valve: it lies between the right ventricles and the pulmonary artery.
4. aortic valve: it lies between the left ventricle and the aorta.
According to the given situation if the valve get damaged Blood would leak backwards through the damaged valves due to gravity, causing lower leg swelling is the relevant option.
Both are able to expand or contract their volumes as liquid is added or removed
No production of ATP or energy for itself since the mitochondria is involved in making ATP