A car whose tire have radii 50cm travels at 20km/h. What is the angular velocity of the tires?

List one type of erosion and describe how it happens?

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

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?