A biologist collected 1 gallon of pond water and counted 50 paramecium. Based on the sampling techniques, how many paramecium could be found in the pond if the pond were 20,00 gallons?

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.