Biology Chapter 6: Humans in the Biosphere

Hunting and gathering, agriculture, industry, and urban development.

The practice of farming.

Farming strategy in which large fields are planted with a single crop, year after year.

<p>The development of highly productive crop strains and the use of modern agricultural techniques to increase yields of food crops.</p> Signup and view all the answers

<p>Environmental resources can be classified as either renewable or nonrenewable.</p> Signup and view all the answers

<p>Human activities can affect the quality and supply of renewable resources such as land, forests, fisheries, air, and fresh water.</p> Signup and view all the answers

<p>Resource that can regenerate quickly and that is replaceable.</p> Signup and view all the answers

<p>Resource that cannot be replenished by natural processes.</p> Signup and view all the answers

<p>Using natural resources at a rate that does not deplete them.</p> Signup and view all the answers

<p>The wearing away of surface soil by water and wind.</p> Signup and view all the answers

<p>A process caused by a combination of poor farming practices, overgrazing, and drought that turns productive land into desert.</p> Signup and view all the answers

<p>Destruction of forests.</p> Signup and view all the answers

<p>The raising of aquatic organisms for human consumption.</p> Signup and view all the answers

<p>Mixture of chemicals that occurs as a gray-brown haze in the atmosphere.</p> Signup and view all the answers

<p>Harmful material that can enter the biosphere through the land, air, or water.</p> Signup and view all the answers

<p>Rain containing nitric and sulfuric acids.</p> Signup and view all the answers

<p>Biodiversity is one of Earth's greatest natural resources providing food, industrial products, and medicines.</p> Signup and view all the answers

<p>Altering habitats, hunting species to extinction, introducing toxic compounds into food webs, and introducing foreign species to new environments.</p> Signup and view all the answers

<p>Conservation efforts focus on protecting entire ecosystems as well as a single species.</p> Signup and view all the answers

<p>Biological diversity; the sum total of the variety of organisms in the biosphere.</p> Signup and view all the answers

<p>Variety of habitats, living communities, and ecological processes in the living world.</p> Signup and view all the answers

<p>Number of different species in the biosphere.</p> Signup and view all the answers

<p>Sum total of all the different forms of genetic information carried by all organisms living on Earth today.</p> Signup and view all the answers

<p>Disappearance of a species from all parts of its geographical range.</p> Signup and view all the answers

<p>Species whose population size is rapidly declining and will become extinct if the trend continues.</p> Signup and view all the answers

<p>Splitting of ecosystems into small fragments.</p> Signup and view all the answers

<p>Increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web.</p> Signup and view all the answers

<p>Plants and animals that have migrated to places where they are not native.</p> Signup and view all the answers

<p>Wise management of natural resources, including the preservation of habitats and wildlife.</p> Signup and view all the answers

<p>The ozone layer in the atmosphere and the global climate system.</p> Signup and view all the answers

<p>Atmospheric layer in which ozone gas is relatively concentrated.</p> Signup and view all the answers

<p>An increase in the average temperatures on Earth.</p> Signup and view all the answers

<p>Didn't change environment much; didn't waste resources.</p> Signup and view all the answers

<p>Effects: altered environment (cut down trees); Benefits: allows to produce more food that can be stored.</p> Signup and view all the answers

<p>Added machines, makes life easier.</p> Signup and view all the answers

<p>Growth of cities; few can make many, transportation.</p> Signup and view all the answers

<p>Altering habitats, hunting to extinction, introducing toxic compounds into food webs, introducing invasive species.</p> Signup and view all the answers