C. Australia was covered in ice during a key geologic period.
at the time of coal forming, Australia was closest to the south pole, so it was too cold.
I believe the answer would be D) kitchen scraps and grass clippings
The integumentary system is the skin. Skin protects the inner organs from Bactria. Essentially the skin is a wall protecting against the outside world. It doesn't really release anything but is just there for protection.
Hope this helped!
Answer:
vultures, pretty much anything that is a decomposer like worms and stuff
Explanation: