1. Why do you think the string phone didn't work when the string was hanging loose?
2. Why is the string better able to carry the sound than just through the air?
3. Describe how the sounds traveled, step by step, from one person's mouth to the other person's ear, through the phone.
4. Do you think the phone would work better with a longer or a shorter string? Why?

not only is it colder, it also becomes darker, less salty, and more dense.

a. to encourage apoptosis

the flagellates share a facultative mutualist association with termites. mutualism is a biological interaction between individuals of different species, where both benefit from each other. this is called cooperation and it differs from other interactions such as cases of exploitation, such as parasitism, predation. in this interaction called association, both species cooperate and benefit.