Which of these could be used to determine the amount of acid rain that might occur in the hydrologic cycle of an area? A. A device that measures the amount of chemicals released into the air by a factory.
B. A tool that identifies the types of trash entering bodies of water.
C. A device that measures the concentration of pollutants in a specific area of the ocean.
D. A tool that identifies the types of chemicals that transpire from plants.

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?