Brainliest answer please im not wasting my points for no reason please this is the last one and then im done please thank you What do the solid lines on the topographic map represent?

A. changes in rock types

B. lines of equal pressure

C. lines of equal elevation

D. changes in vegetation

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid