The comparison of two bullets is possible with a comparison microscope. Such a comparison is made difficult by what fact

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

True or false multiple lane changes must be done individually going through the same procedures for each lane change