What is true of a gas? a. a gas has a fixed shape and will expand or shrink to fill any container. b. a gas has a fixed shape and has the same volume in any container. c. a gas has a changeable shape and will expand or shrink to fill any container. d. a gas has a changeable shape and has the same volume in any container.

Correct C

Explanation:

Correct C. A gas has a changeable shape and will expand or shrink to fill any container.

Explanation: A gas has a changeable shape. You can see this when a gas takes the shape of the container it is put in. A gas can expand or be compressed to fill any container, no matter how large or small the container is.

A fixed shape with the same volume in any container (choice B) describes a solid, while a changeable shape with the same volume in any container (choice D) describes a liquid. Choice A does not correspond to any known phase of matter.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.