Which is a shared characteristic of all animals? a) they are autotrophs b) they are vertebrates c) they are invertebrates d) they are heterotrophs

The answer is D they are heterotrophs

D) they are heterotrophs

Explanation:

All animals are heterotrophs. This means that they get the nutrients (nitrogen, carbon, etc.) and the energy they need to live through plants or other animals, since they do not have a system for the production of their food. All animals need carbon for the proper functioning of their basic processes, such as growth, development and reproduction.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.