The carbon cycle is the biogeochemical cycle focused on carbon and how it is sequestered in and moves between different reservoirs in the Earth system. Natural gradients across surface ocean ...

The cycle of abuse includes four stages—tension building, abuse, reconciliation, and calm—that allow abusers to control their victims through fear and manipulation. This pattern can trap victims and ...

The general term for these animals is helminths. Several helminths, such as the following, cause illnesses: Pinworms are the most common type of intestinal worm to affect children. They are also ...

Late or missed menstrual period Late period: 5 or more days late compared to normal menstrual cycle Missed period: no menstrual flow for more than 6 weeks Teen not using any birth control that stops ...

The parasites get into the lakes from the droppings of water birds. Their normal life cycle involves birds and snails. It dies off quickly in human skin. Repeat Contact (Exposure) and the Body's ...