Why do coastal habitats have distinct characteristics ? urgently need a < 3

Which of the following best describes the economy of africa?

Stages 1 and 4 of the demographic transition are similar in that

The distance a car travels between the time the driver decides to stop the car and the time the driver puts on brakes is called the reaction distance. how does the reaction distance change with speed? a.reaction distance decreases with with speed b.reaction distance stays the same with speed c.reaction distance increases with speed. d.there is not enough information to answer the question