What would be the calculated population density for a frog population if there were 100 frogs living in a pond that covers four square kilometers?

A) 100 frogs per square kilometer

B) 50 frogs per square kilometer

C) 40 frogs per square kilometer

D) 25 frogs per square kilometer

Mike wants to negatively charge a small rubber ball. which of these methods would successfully charge the ball? a) heating the ball in boiling water b) running the ball over a strong magnet c) rubbing the ball back and forth on carpet d) dropping the ball from a tall bulding submit hint forces in nature (s8p5.b) conductors and insulators id: 10402 hint electrons must be transferred.