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the water that is found underground in soil pore spaces and in the cracks and spaces within rock formations.
pigments that occur in the brightly coloured, yellow, orange or red parts of the plant, such as...
parenchyma cells that are exposed to light and contain many chloroplasts. Chlorenchyma cells...
cellular respiration that takes place when free oxygen is absent
the acidic fluid secreted into the mammalian stomach which contains various digestive enzymes...
external opening of the rectum (part of the mammalian digestive tract) through which faeces are...