The answer to this question is C. URANIUM, although it is dangerous in other ways, it does not release co2
A layer of smooth cartilage at their ends, which cushions the bones and prevents them from rubbing directly against one another. The whole joint is also enclosed in a synovial capsule, which is full of synovial fluid. The synovial fluid acts like the oil in an engine, lubricating the joint and preventing the cartilage from becoming worn down.
Answer:
I think humans and whales are closely related on the evolutionary tree because they are both mammals and both have endoskeleton
