Takes into account both the biotic (living) communities and the abiotic (nonliving) environments on which the communities depend.

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

As an asteroid comes close to earth, it's name will change to? apex