Answer:
Respiratory
Explanation:
they all come together and help with breathing and oxygen :)
Its either a or d
a because if someone takes a photo of the wings they could see how the wings work
or
d because then the person could see the colors in the pictures
I'm going to guess on your unmentioned following and say that it is not derived from beans, eggs, milk, and so on because a lipid is an oily, greasy and waxy molecule found inside of a body. Lipids can normal be extracted from cells using non-polar solvents such as chloroform or benzene. Hope this helped!
Because gravity pulls towards the center of the earth evenly in all directions, giving earth a spherical shape.
