Answer: [B]: "proteins" .
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This is incorrect. Joints' movement is based on body position and on the role they have in the body.
Answer:
The correct option is lamprey.
Explanation:
Lamprey is a kind of fish which lack jaws. They lack a true skeleton, but the cartilage is present in them. Due to lack of proper backbone, they look similar to snails. The lamprey reproduces by laying eggs in the water. Larvae tend to develop from these eggs. The lamprey releases its eggs only in freshwater. Only the mature lamprey live in the sea to act as a parasite and take food. For laying eggs, it travels to freshwater.
Koalas benefit from tress because then can climb on them to keep away from danger such as other ground predators, Trees can also serve as a food source for them to eat in day to day life.
