They dont release any oil
they "preen" their feathers with their beaks not put oil on them
The answer would be, if I understand correctly, skeletal and smooth muscle tissue both help the body move, and give the body form. The skeletal structure give the body structure, and the muscles help the body move.
It's biotic, biotic is basically anything living
Hope this helps
Organisms that obtain energy by eating other organisms are called consumers. They are organisms like animals and fungi.
