Answer:
Because it is made up of organs that act as a system
Explanation:
The integumentary system, skin, has been referred to as a membrane and an organ, but it is more commonly referred to as a system since it contains organs that operate together. Because it surrounds the body and comprises multiple types of tissues and a membrane, it is sometimes considered an organ.
I believe that substance would be water.
Continetal drift is land masses that mover over the surface of the earth.. for example a land mass might move from an equatrioal region of the earth and then to an antarctic region so therefore it recives an antarctic climate instead of a equatrial one....
Answer:
✔ D) <em>starfish and sand dollars</em>
** is the correct answer **
Explanation:
is the correct answer crinoids are echinoderms, animals with rough, spiny surfaces and a special kind of radial symmetry based on five or multiples of five.
http://geokansas.ku.edu/crinoids
