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when the entire heart, both of the atria and ventricles, is relaxed.
cells that are formed during secondary growth by the vascular cambium ring just to the inside of...
refers to any variation in the nucleotides, genes, chromosomes, or whole genomes of organisms....
the total amount of carbon dioxide produced by individuals, nations or organisations as a result...
outgrowths of neurons (nerve cells) that transmit nerve impulses towards the cell body.