Which phrase best describes a nonpoint source of water pollution?

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?