Why are carbohydrates important in body functions

(healthy carbohydrates) grains, fruits, veggies, are important because this is what fuels all cells to function as they should. 4 example, someone with an eating disorder, if not treated, results in a person who sleeps most of the day, lethargic, has no energy and affects the thyroid gland and eventually the whole body system

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements