Based on what you know about ecosystem stability and the information provided in the graph, which community (A-E) would likely support the most biodiversity? A) A B) B C) C D) D E) E
Study the information above about quail habitats. Which of these represents the best quail habitat in terms of fragmentation and edge? A) A B) B C) C D) D E) E
The biggest challenge that Costa Rica will likely face in its dedication to conservation and restoration in the future is A) the pressures of its growing population. B) its small size (as a country), which may not be able to maintain large enough reserves. C) the potential for disturbance of sensitive species in reserves by ecotourists. D) spread of disease and parasites via corridors from neighboring countries. E) the large number of Costa Rican species already in the extinction vortex.
This causes extremely high levels of toxic chemicals in fish-eating birds. A) depletion of ozone layer B) acid precipitation C) biological magnification D) greenhouse effect E) eutrophication
Agricultural lands frequently require nutrient augmentation because A) nitrogen-fixing bacteria are not as plentiful in agricultural soils because of the use of pesticides. B) the nutrients that become the biomass of plants are not cycled back to the soil on lands where they are harvested. C) land that is available for agriculture tends to be nutrient-poor. D) grains raised for feeding livestock must be fortified, and thus require additional nutrients. E) cultivation of agricultural land inhibits the decomposition of organic matter.
Burning fossil fuels releases oxides of sulfur and nitrogen. These air pollutants can be responsible for A) the death of fish in lakes. B) precipitation with a pH as low as 3.0. C) calcium deficiency in soils. D) direct damage to plants by leaching nutrients from the leaves. E) All of the options are correct.
