Science!

why is preserving biodiversity in the galápagos islands an important worldwide concern

a. the world fish markets depend mainly on fish from these islands

b. the galapagos islands contain more different species than any comparable place on the earth

c. the tourist trade on the islands will decrease without biodiversity

d. many species unique to the islands may become extinct

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point