Two friends walked 120 meters in 60 seconds east to school. What was their velocity?

Describe two recent or ongoing space missions.

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 following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs