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the bones that form the rib cage and protect the lungs.
a hormone produced by the pituitary gland, which helps to limit the amount of water lost from...
(also called secondary thickening) growth due to new cells being formed by the secondary...
a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. A...
the gamete-producing phase that produces the zygote from which the sporophyte emerges.