Answer:
Oxygen is moved around the body of an echinoderm in its C. water vascular system.
The year is based off of Earth’s revolution around the sun. 1 year is equal to the amount of time that it takes for Earth to revolve once around the sun.
C.acolony
because A detritivore (also known as decomposers) is an animal that feeds on dead organisms(living things) and breaks them down into smaller molecules. Detritivores are essential in the ecosystem as they return important materials such as carbon (see carbon cycle) back into the environment. Examples of common detritivores include earthworms and woodlice, but also includes microscopic (things that can only be seen using a microscope) bacteria.
It is an example of a volcano the outside
red on the inside is magma
