Amp; 2 i think yeah just draw dots and connect them accordingly. just do the calculations then draw the graphs
Answer:
How the heart works
The heart is a large, muscular organ that pumps blood filled with oxygen and nutrients through the blood vessels to the body tissues. It's made up of:
4 chambers. The 2 upper chambers are the atria. They receive and collect blood. The 2 lower chambers are the ventricles. They pump blood to other parts of your body. Here is the process:
The right atrium receives blood from the body. This blood is low in oxygen. This is the blood from the veins.
The right ventricle pumps the blood from the right atrium into the lungs to pick up oxygen and remove carbon dioxide.
The left atrium receives blood from the lungs. This blood is rich in oxygen.
The left ventricle pumps the blood from the left atrium out to the body, supplying all organs with oxygen-rich blood.
4 valves. The 4 valves are the aortic, pulmonary, mitral, and tricuspid valves. They let blood flow forward and prevent the backward flow.
Blood vessels. These bring blood to the lungs, where oxygen enters the bloodstream, and then to the body:
The inferior and superior vena cava bring oxygen-poor blood from the body into the right atrium.
The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream.
The pulmonary veins bring oxygen-rich blood to the left atrium.
The aorta channels oxygen-rich blood to the body from the left ventricle
The net primary productivity is derived from the gross primary productivity, which is a measure of the total amount of light energy that was captured and converted into chemical energy (organic compounds) during Photosynthesis. Plants allocate that biomass (energy) to power their life processes or to store energy.
Where do we hypothesize that plants came from?
I actually think that as people progress through middle adulthood, they experience Senescence (primary aging) in the form of molecular and cellular changes in the body. In this process cells irreversibly stop dividing and enter a state of permanent growth arrest without cell death. The process plays roles in normal development, maintains tissue homeostasis, and limits tumor progression.