Answer is A. This is because it takes no energy and is natural for particles to go from high to low concentration. Think of a packed room. If the door opened it would take no energy for people to flow out. It would take a lot of energy for more people to get crammed in the room the room though (going from low to high concentration)
Peyer's patches are lymphatic tissue patches that are located in the small intestine. The lymphatic system provides an immune response for the body, so if there was an infection of the Peyer's patches, the body's defense system in the small intestines, which would make the intestines more susceptible to cancer or infection.
Answer:
Mutualistic relationships is where both organisms cooperate and benefit from each other while predator prey relationships is just an organism hunting down another organism.
Explanation:
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The human skeleton consists of 206 bones and is divided into two parts: the axial skeleton and the appendicular skeleton.