Whet is the average speed of a boy who welis 12km in 4 hours

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

What percentage of light hits earth's surface directly?

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f