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Janssen Bio Ch 16

Mrs. Janssen's Biology Ch 16

What is carrying capacity? The number of organisms a habitat can support.
How can humans modify their environment to increase carrying capacity? agriculture, transportation, medical advances, sanitation
What are nonrenewable resources? Resources that are used up faster than they form.
What are renewable resources? A resource that can be replaced at the same rate or faster than it is being used.
What is ecological footprint? The amount of land necessary to produce and maintain enough food, water, shelter, energy, and waste.
What country has the largest ecological footprint in the world? U.S.
What is pollution? Any undesirable factor added to the air, water, or soil.
What is smog? A type of air pollution caused by the interaction of sunlight with pollutants.
What are particulates? Microscopic bits of dust, metal and unburned fuel produced by industrial processes.
How does ground level ozone form? Reaction between NO2 and O2 (nitrogen dioxide and oxygen)
What is acid rain? Precipitation produced when pollutant lower the pH of rain.
What kind of temperatures are associated with higher levels of carbon dioxide? Warmer
What kind of temperatures are associated with lower levels of carbon dioxide? Cooler
What is the greenhouse effect? Carbon dioxide, water, and methane absorb energy and slow the release of energy from the atmosphere.
What are some negative effects of global warming? Increased flooding, tropical storms, loss of biodiversity
What do indicator species do? Provide a sign of the quality of the ecosystem
What indicator species did we use in class to look at how a pollutant affects water? Duckweed
What is biomagnification? As a pollutant moves up the food chain, the concentration increases
Which level of species does biomagnification have the most serious effect? Those near the top of the food chain
What is biodiversity? The wide variety of species found in an ecosystem
Nearly half of all prescribed medications come from what? Plants
Where is biodiversity the highest? Rain forest
What is habitat fragmentation? When a barrier forms that prevents an organism from accessing its entire home range.
What is another name for introduced species? Invasive species
What is sustainable development? Natural resource are used and managed in a way that meets current needs without harming future generations.
Name one technique that the fishing industry can use to make it more sustainable. rotation, fishing gear review, harvest reduction, fishing bans
What is meant by the term "umbrella species?" When a single species is placed on the endangered list and many other species benefit.
What is the total yearly value of the services Earth's natural ecosystems provide? $30 trillion
Name one law that was passed to help protect natural resources. EPA of 1970, Clean Air Act, Clean Water Act, Endangered Species Act
How many people can Earth support? Unknown
What would Earth be like without the Greenhouse Effect? Too cold to be habitable
What is the pH of normal rain? 5.6
What is cutting down an entire forest ecosystem called? Clear cutting
Created by: jjanssen33