Antoine's second-grade teacher is astonished to learn that he has become a career military officer. when he was in second grade he was the class clown, was undisciplined, and did very poorly. this turn of events is related to which question of development? a) continuity versus discontinuityb) qualitative versus quantitativec) nature versus nurtured) universal versus culture-specifice) stability versus instability

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.