Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch.11 Living ResoVoc
Focus on California Earth Science 2008 Pearson Prentice Hall
| Term | Definition |
|---|---|
| biome | a region with a certain climate and certain forms of vegetation |
| desert | an arid area that on average receives less than 25 cm of rain per year |
| canopy | a leafy roof at the top of tall trees |
| understory | a second layer of shorter trees and vines formed below the canopy |
| grassland | an area populated mostly by grasses and other non-woody plants |
| savanna | grasslands that are formed closer to the equator than prairies |
| deciduous tree | trees that shed their leaves and grow new ones each year |
| coniferous tree | trees that produce their seeds in cones and have leaves shaped like needles |
| tundra | a polar climate region, found across nrothern Alaska, Canada, and Russia, with short cool summers and bitterly cold winters |
| permafrost | permanently frozen soil found in the tundra climate region |
| estuary | a coastal inlet or bay where fresh water from rivers mixes with salty ocean water |
| intertidal zone | the area between the highest high-tide line on land and the point on the continental shelf exposed by the lowest low tide |
| neritic zone | the area of the ocean that extends from the low-tide line out to the edge of the continental shelf |
| kelp forests | areas of the ocean floor where large, brown algae called giant kelp grow |
| coral reefs | a structure of calcite skeletons built up by coral animals in warm, shallow ocean water |
| plankton | tiny algae and animals that float in water and are carried by waves and currents |
| renewable resource | 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 trees in a forest and leaving a mix or tree sizes and species behind |
| sustainable yield | an amount of a renewable resource such as trees that can be harvested regularly without reducing the future supply |
| fishery | an area of ocean with many valuable ocean organisms |
| aquaculture | the farming of saltwater and freshwater organisms |
| 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 | a species in danger of becoming extinct in the near future |
| threatened species | a species that could become endangered in the near future |
| habitat destruction | the loss of a natural habitat |
| poaching | the illegal killing or removal of wildlife from their habitats |
| captive breeding | the mating of animals in zoos or wildlife preserves |
Created by:
mushijima
Popular Earth Science sets