Koala bears can eat only certain kinds of australian eucalyptus leaves. koalas are considered

Herbivore Marsupials

Explanation:

Koalas are the herbivore marsupials that are found to be dwelling on the trees, and are dominantly found in the continent of Australia. They are very selective in terms of food, and are able to eat only certain types of plant leaves but not all. They obtain relatively less nutritious food, thereby receives less amount of energy. Due to this, the Koalas are mostly lazy and spend most of their time by sleeping and sitting.

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

explanation:

the masses of the objects and the distance between them