What are some of the animals that make up Russia's ecosystems? (Site 1)

Snow leopards, polar bears, and small, rabbit-like mammals called pikas. Explanation:I hope this helped! If it didn't so sorry!  

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 : )

resonant frequency