Fitness evolution are usually designed for a certain group of people. t or f

This statement would have to be "false" or the second option. If it has something to do with fitness it would mainly be in affect for anyone. So in this case if you want to talk about something that a evolution for fitness it would most likely be for anyone since how it could make anyone fit.

Hope this helps!

the last statement is correct i.e.

when your heart is not pumping enough blood around your body because your heart is severely failing, you may need an artificial heart. an artificial heart is a mechanical device, about the size of an orange, that is connected to your heart or implanted in your chest to or replace a failing heart.

i think he will be okay, id probably take the dog to the vet just incase