15 points answer fast! according to embryology, which three species have the closest common ancestor? a. insects, birds, and fish b. amphibians, mammals, and birds c. reptiles, amphibians, and bacteria d. insects, bacteria, and reptiles

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative