Which of the following would be included in public health? -purifying water with chlorine to kill disease-causing bacteria species
-reducing water pollution to protect an endangered fish species
-providing water and wetland habitats necessary for many frog species
-removing solid waste from water to prevent killing marine bird species

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.

Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine