Which is the best definition of a “species”? Select one:
a. A group of organisms that can breed together.
b. A group of organisms that can breed and produce fertile offspring together.
c. A group of organisms that look and act similar.
d. A group of organisms that can breed and produce infertile offspring together.

When analyzing tree rings, what do scientists assume a thin ring indicates?

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

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species