The invention of the microscope made it possible for people to discover a. plants. b. skin. c. animals. d. cells. select the best answer from the choices provided a b c d

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20