Beet or cabbage juice can be used as:
a. litmus
c. bases
b. indicators
d. home cleaners

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Which of the following human activities resulted in the growth of the north american deer population?