5 Which has the greatest average speed? A. a boat sailing 80 km in 2 hours
B. a car driving 90 km in 3 hours
c. a train traveling 120 km in 3 hours
D. a truck moving 50 km in 1 hour

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?

Explain how a step-down transformer makes electricity safe for use in homes