What would happen in an ecosystem without herbivores? (2 points)
the populations of secondary consumers would decrease.
the populations of primary producers would decrease.
the populations of secondary consumers would increase.
the populations of primary consumers would increase.

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

What pattern of migration do whales follow?

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism