Developed countries have water treatment plants that filter and clean water that is used for human consumption. What could happen if these countries did not have such facilities? * answer it a soon. as possible please no link please answer it pleas :)​

When balancing a chemical equation:

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors