Describe the design solution engineers and scientists developed to prevent contamination of Cleveland drinking water. Why did their solution need to address both sub-problems equally? Propose two additional solutions to address the ecological phenomena causing the water contamination in Lake Erie.

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun