Bill and amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. it takes amy 40 mins to arrive to school. bill arrives 20 mins after amy. how much faster (in meters/second) is amy's average speed for the entire trip?
show the steps or write the steps.

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein