Skeletal and Muscular
Why do we have a Skeletal system?
Without a skeleton, we wouldn't be able to move at all.
What would happen if we didn't have a circulatory system?
Then we do not have blood ,blood vessels, excreatory system, etc.
What would happen if we didn't have Nerves?
if you didn't have nerves, you would not feel the pain in your hands and let them get harmed
Why do we need a digestive system?
The digestive system converts the foods we eat into their simplest forms.
Why do we have an immune system?
Your immune system is your body's defence against infection and illness.