Think of a technology or appliance you use regularly. Identify the transfers and transformations of energy necessary to operate the technology. What do you think is the original source of energy?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Can someone me with questions 15 to 17 plz.

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?