<span>Answer: occurs when the aortic and pulmonary valves backfill with blood</span>
The second heart sound,that is heard in normal hearts, is generated by the closing of the semilunar valves((the aortic valve and pulmonary valve). Before that, the first sound corresponds to the closing of the atrioventricular valves.
False the embryo is implanted into the animal that donated the egg
Answer:
its a Bamboo tree
Explanation:
Ang kawayan ay magagamit sa paggawa ng lantay, upu-an at iba pa
Answer:
The results of restoration of this kind can include improved habitats for fish, birds and other wildlife, protection against flooding, better water quality, enhanced recreational opportunities, and increased economic opportunities through activities such as commercial fisheries and tourism.
Explanation:
