Explain why point-source pollution is easier to control than nonpoint-source pollution

This is so important ugh its 25 points

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs