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BMMS 6Science Ch 11

BMMS Science Chapter 11 - Living Resources

QuestionAnswer
Biome a region with a certain climate and vegetation
Desert an area that receives less than 25 cm of rain per year
Canopy the tall trees that form a leafy roof in a rain forest
Understory a second layer of shorter trees and vines in a rain forest
Grassland an area that is populated mostly by grasses and other non-woody plants; most grasslands receive 25 to 75 cm of rain per year
Savanna receives as much as 120 cm of rain per year; scattered shrubs and small trees grow on the savanna along with grass
Deciduous trees trees that shed their leaves and grow new leaves every year
Estuary where the fresh water of a rive meets the salt water of the ocean
Intertidal zone the area between the highest high-tide line and the lowest low-tide line
Neritic zone the shallow region that extends over the continental shelf
Kelp forests grow in the cold neritic waters where the bottom is rocky
Plankton tiny organisms that float in the water; algae
Renewable resources a resource that is either always available or is naturally replaced in a relatively short time
Clear-cutting the process of cutting down all the trees in an area at once
Selective cutting cutting down only some of the trees in a forest and leaving a mix of tree sizes and species behind
Sustainable yield the amount of a renewable resource that can be harvested regularly without reducing the future supply
Fishery an area of the ocean with many valuable ocean organisms
Aquaculture the practice of raising fish and other water-dwelling organisms for food
Biodiversity the number of different species in an area
Keystone species a species that influences the survival of many other species in an ecosystem
Extinction the disappearance of all members of a species from Earth
Endangered species species in danger of becoming extinct in the near future
Threatened species species that could become endangered in the near future
Habitat destruction the loss of natural habitat; also a major cause of extinction
Poaching illegal killing or removal of wildlife from their habitats
Captive breeding mating of animals in zoos or wildlife preserves
Created by: mrpowers
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