The scientist has a water sample from an unknown location in the lake. when bromothymol blue is added, the sample becomes blue. from where did the sample most likely come?

What is the difference between topsoil and clay?

The best instrument to use to separate the liquid portion from the solid portions in whole blood is a(an) a. compound light microscope. c. test tube. b. centrifuge. d. electron microscope.

Look at the illustration of four letters from the american manual alphabet. decide whether the description of the letter is a good definition. if not, choose a counterexample. the letter i is formed by sticking up the smallest finger and folding all the other fingers into the palm of your hand with the thumb folded over them while keeping your hand still.