Compare the blood in the arteries going out to the body cells with the blood in veins coming back to the heart from body cells.

The blood going out from the arteries is full of oxgyen.It delievers that oxgyen to organs,therefore when it returns in the veins it contains carbon dioxide.

The blood in the arteries going out the body cells contains mostly oxygen or sometimes bacteria but the blood in the veins coming back to the heart from body cells contains more of the stomach areas such as little food particle.

1.)dr. natterson- horowitz came to realize that their isn't much of a difference between animals and humans. just like humans, animals can suffer from illnesses and diseases like breast cancer, self injury, anxiety, and many more. she also discovered how they even treated and performed surgical procedures on animals just as if the animal it self were human. the los angeles zoo called dr. natterson- horowitz because they knew that she was a doctor and that  she would be able to recognize what was wrong with the gorilla. they knew that humans and gorillas were similar, so instead of calling another veterinarian, they called a doctor.