5th Grade Science, Chapter 5
Terms
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- allows a living organism to survive
- adaptation
- to save, protect or use resources wisely
- conserve
- preventing erosion by plowing across rather than up and down a slope
- contour plowing
- growing different crop each year so that the soil does not use up the same kinds of minerals year after year
- crop rotation
- the gradual replacement of one community by another
- ecological succession
- a resource that cannot be used up or depleted easily
- inexhaustible resource
- anything that controls the growth of a population
- limiting factor
- a resource that cannot be replaced within a short period of time or at all
- nonrenewable resource
- the first community thriving in a once lifeless area
- pioneer community
- to add unnatural substances to the Earth's land, water or air
- polute
- material not yet refined, manufactured or processed
- raw material
- a resource than can be replaced in a short period of time
- renewable resource
- what a living thing does in response to a stimulus
- response
- any material that helps support life on Earth
- resource
- something in the environment that causes a living thing to react
- stimulus
- a growth response of a plant to toward or away from a stimulus
- tropism
- The land on Eart is divided into six major kinds of large ecosystems and they are called this
- Biomes
- Biomes where grasses are the main plant life and where rainfall is irregular and not usually plentiful
- Grasslands
- The lakes and ponds of a cool, forested biome is called this
- taiga
- The biome of the far north is called this
- tundra
- Sandy or rocky biome with little precipitation and little plant life
- dessert
- The forest biome with many trees that lose their leaves each year
- deciduous forest
- Hot and humid biome with much rainfall.
- tropical rain forest