What happens to light when it
enters a concave lens?
a. it refracts.
b. it reflects.
c. it converges.

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?