Http://www.livescience.com/22537-skeletal-system.html
Answer:
Knee joint.
Explanation:
The knee joint is a freely movable joint in the body. Usually allows a slight degree of movement.
Answer:
Osmosis
Explanation:
Water moves across cell membranes by diffusion, in a process known as osmosis.
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Humans conduct internal fertilisation.
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Answer:
kidney
Explanation:
pancreas to regulate salt
