- Life Sciences
deep, narrow holes drilled into the earth to reach the ground water in aquifers.
reproductive or sex cells that contain the haploid set of chromosomes. The male gametes are...
a molecule that stores large amounts of energy that can be used for metabolic activity.
the end part of the digestive system that consists of the caecum, colon, rectum and anus.
(also called the stele) the region that includes the pericycle and the vascular tissues in a...