Students in a biology class thought that salt water would affect the movements of planaria.
They put 25 planaria in salt water and
recorded their observations.
Which flaw was present
in the design of their
experiment?

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

The three types is stress that act on earths rocks are compression, tension, and

What must be in balance for temperatures to remain constant?