There are between 500 and 700 lyph nodes in the body. It depends on the individual person.
Lymph nodes are like little filters. They contain lymphatic fluids and also white blood cells that destroy any harmful germs that pass through them.
Answer:
a system formed by the interaction of a community of organisms with their physical environment.
Answer:
A
Explanation:
In natural selection animals with phenotypes best adapted to their environment survive. These animals will then reproduce producing more animals with their phenotype which survives better in the environment.
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