Which method can be used for separating a mixture of sand and salt?
a. evaporation
b. magnetism
c. distillation
d. filtration

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.