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18 Cards in this Set

  • Front
  • Back
What is a biome?
A group of ecosystems that have the same climate and similar dominant communities.(pg64,98)
What is a canopy?
A canopy is a dense covering formed by the leafy tops of tall rain trees.(p 100)
What is a deciduous tree?
A tree that sheds its leaves during a particular season each year(p 100)
What is humus?
Humus is material formed from decaying leaves and other organic matter(p 103)
What is permafrost?
Permafrost is a layer of permanently frozen subsoil in the tundra(p 104)
What is a microclimate?
A climate within a small area that differs signigicantly from the climate of the surrounding area.(p 98)
What is understory?
It is a layer in a rain forest formed by shorter trees and vines.(p100)
What is a coniferous tree?
Trees that produce seed-bearing cones and have thin leaves shaped like needles.(p103)
The Role of Climate
Carbon dioxide, methane, water vapor, and a few other atmospheric gases trap heat energy and maintain Earth's temperature range
What are the three major climate zones?
As a result of differences in latitude and thus the angle of heating, Earth has three main climate zones: polar, temperate, and tropical.
What Shapes an Ecosystem?
Together, biotic and abiotic factors determine the survival and growth of an organism and the productivity of the ecosystem in which the organism lives.
What can affect an ecosystem?
Comunity interactionsm such as competition, predation, and various forms of symbiosis, can powerfully affect and ecosystem.
What is predation?
Predation is interaction in which one organism captures and feeds on another organism(p93)
Explain how ecosystems are constantly changing.
Ecosystems are constantly changing in response to natural and human disturbances. As a ecosystem changes, older inhabitants gradually die out and new organisms move in, causing further changes in the community.
What are the world's major land biomes?
Tropical rain forest, tropical dry forest, tropical savanna.
Temperate grassland, desert, terperate forest, northwestern coniferous forest, boreal forest and tundra.
What determines an Aquatic Ecosystem?
Aquatic ecosystems are determined primarily by the depth, flow, temperature, and chemistry of the overlying water.
What are the two main types of freshwater ecosystems?
The two main types are, flowing-water ecosystems and standing-water ecosystems
What are divisions of ocean?
Division of the photic and aphotic zones and marine biologists also divide it into zones based on the depth and distance from shore: the intertidal zone, coastal ocean, and the open coean.