Your cardiac surgeon warns you that they might need to install an artificial valve in your heart because blood is being regurgitated into your right ventricle. The valve
they are considering replacing is your:
aortic valve.
tricuspid valve.
mitral valve.
pulmonary semilunar valve.

1- a    2 - d3 - e4 - f5 - c6 - g7 - h8 - b

Imma gonna say go with the very first answer (:

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.