<span>All plant and animal groups existing together and the physical factors with which they interact compose an ecosystem.
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Answer: It translated ''Nobar story summary'' for me
Explanation:...
Answer: The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones.
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Option A,
both limit movement of substances through the system
The sphincter muscle usually surrounds the openings in the body such as urethra, anus and performs the function of tightly closing the openings. When once the messages are received from the nervous system the sphincter relaxes and releases the material out of the opening during urination of excreting
The same is the function of valves in the circulatory system. They also prohibits the entry of blood from one chamber to other and then to the main circulatory system. The relaxes on receiving a signal from the brain and thus transfer blood from one chamber to the other.
Answer:
divergent and convergent I believe
