Suppose a book is dropped from a height of 1.0m. What is the velocity of the book just before it hits the ground?

What are two reasons for why a species might disappear from the fossil record?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f