Answer:
good and yes I agree we need positivity
Answer:electron,atoms,molecules
Explanation:
Answer:
the Controlled Substances Act
Explanation:
The Controlled Substances Act (CSA) is a law aimed at regulating how drugs can be produced, used and sold within the US territory. The CSA regulates legal and also illegal chemical substances. The CSA imposes the condition to the persons and institutions who handle controlled drugs/chemicals (e.g., hospitals, pharmacies, doctors, scientific investigators, etc) to register with the DEA (Drug Enforcement Administration), whose main function is to enforce the CSA.
Answer:
The semilunar valves open during the ejection phase due to the pressure on the left ventricle being higher than the pressure in the aorta and pulmonary artery.
Explanation:
During the ejection phase occurring in the ventricular systole, the pressure in the left ventricle increases and overpasses the pressure in the aorta and pulmonary artery. At this point the semilunar valves open, allowing the blood to flow from the ventricle into the arteries.
