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?

Butterfly species A is a Batesian mimic of butterfly species B. If species B were eradicated from a region, what would be the most likely effect on the population of species A?

Unsustainable fishing, or overharvesting, of many ocean fish species is now occurring. What, if any, is a major ecological impact of this overharvesting?

The geographic distributions of wolves and coyotes often do not overlap. A study of wolves and coyotes in an area where they do overlap found that the two species minimized competition by differential use of food resources. Wolves preyed primarily on elk and a few deer, whereas coyotes preyed mostly on deer and rarely on young elk. Coyotes also scavenged abandoned wolf kills. Wolf and coyote behavior illustrates which type of competition?

The structure of the cartilaginous and body fishes that detects vibrations in the water is the

The bones that surround and protect the brain are collectively called the

Mendel’s First Law states that: 

Most producers are this particular type. 

In the Pacific Ocean off the coast of Peru, winds are pushing warm surface water away from the shore and allowing cold, nutrient-rich water to reach the surface, resulting in a surge of productivity and a very rich season for sardine fishermen. This region of the ocean is experiencing

Warm, subtropical, high-pressure air periodically moves over Mexico City and traps air in the Valley of Mexico. The air also traps pollutants, producing high smog levels. In this situation, Mexico City’s poor air quality is made worse by which climatic factor?