The heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle
The endocrine system includes these glands.
Correct Answer: fertilizer running off from a large agricultural farm
One of my teachers had told the entire class that we are the only planets in the whole galaxy, and that we were the only solar system. I didn’t know that this wasn’t true until my mom heard and complained to the school.
