Asap ! which topic can be scientifically investigated? a. are butterflies happy when it is sunny? b. how far do butterflies migrate? c. are butterflies beautiful? d. butterflies like cats?

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

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