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symbiosis where one organism lives inside another.
refers to any variation in the nucleotides, genes, chromosomes, or whole genomes of organisms....
a substance found in certain fatty foods or manufactured in the liver. High levels of...
the acidic fluid secreted into the mammalian stomach which contains various digestive enzymes...
the cylinder of parenchyma found from the centre of the stem to the inside of the vascular...
(also called radioactive dating) a method of measuring the age of fossils based on how much...