They provide other organisms with food. got it from : https://quizlet.com/74022812/topic-test-science-flash-cards/#
The answer is B. Hopefully this helps!
<span>Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury.
(smallest to largest) These are just the planets! There is more if you count moons. (:
Hope this helps!
-Payshence xoxo</span>
Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.