Answer:
isn't a golf course made of fake grass? I don't think they need to maintain it ;-;
The answer is D. The ribs PROTECT the lungs and the heart. They allow you to move and they store minerals such as calcium. However it is the brain and the blood vessels that regulate the body temperature not the skeletal system.
The answer is A.
Fungi and algae enter in a symbiotic relationship called Lichen.
No context, unable to answer question