- Life Sciences
the deposition or build-up of silt and organic matter on the beds of rivers, dams etc.
parenchyma cells that are exposed to light and contain many chloroplasts. Chlorenchyma cells...
the tube through which urine passes from the bladder to the exterior.
a pure substance made of only one type of atom. An element cannot be broken down into simpler...
a molecule that stores large amounts of energy that can be used for metabolic activity.