Developers are building ten new homes on a parcel of land of…

Developers are building ten new homes on a parcel of land of one habitat type. Local zoning regulations require that they leave some of the land in its natural condition to conserve native species. They can set aside either one large plot or five small separated plots. The total amount of conserved area is the same in either case. Which choice, if either, would be best for maintaining biodiversity, and why?

The island of Madagascar, off the southern African coast, ha…

The island of Madagascar, off the southern African coast, has a highly unique endemic biota. Roughly 170 million years ago, Madagascar was landlocked in the middle of the supercontinent Gondwana. Gondwana eventually split by continental drift, forming Africa, South America, India, Australia, and Antarctica. For the past 88 million years, Madagascar has been isolated, but some new species can still reach the island from the coast of Africa. This suggests that the evolution of Madagascar’s unique biota is

Before Hurricane Katrina devastated New Orleans in 2005, hum…

Before Hurricane Katrina devastated New Orleans in 2005, humans had vastly changed the area. They had destroyed wetlands, extracted oil and gas (which led to sinking of the ground), constructed dams and levees, dredged, and built channels for ship traffic. Also, rising sea levels had caused the death of some cypress swamps. These changes suggest that development of New Orleans destroyed which major ecosystem service that might have lessened the hurricane’s devastation?