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7th gr 2.3

WED, watersheds, succession, biomes

QuestionAnswer
Name types of chemical weathering. oxidation, acid rain, lichens
Name types of mechanical weathering. wind (abrasion), plant roots, water, ice wedging, heat/cold
What does secondary succession start with? Soil
What does primary succession start with? Rock
What is an independent variable is? What is changed by the scientist in the experiment.
Name some biotic factors. plants, animals, living things
Name some abiotic factors. water, air, rocks- non living, weather
Define biodiversity. The number of different species of plants and animals in an area.
The great the biodiversity the _________ the ecosystem can withstand environmental stress. better
What type of succession occurs after a natural disaster? Secondary
Primary succession occurs after... (2 examples) volcano or glacier
Define ecoregions. Division of the state into geographically similar areas define by climate and animal and plants species.
What type of erosion agents (forces) would form a canyon? wind and water
Define equilibrium. The state of a system that is at rest or in a constant and unchanging, motion. Shows no tendency to alter over time.
Define sustainable. Capable of being maintained at a steady level.
What contributes to greater sustainability of an ecosystem? Biodiversity
What is a climax community? A stable state of succession or end product of succession.
Define limiting factors. Factors that limit the ability of a habitat to sustain a population.
A small specialized habitat is called a _________. microhabit
What contributes to greater sustainability of an ecosystem? Biodiversity
What is a climax community? A stable state of succession or end product of succession.
Define limiting factors. Factors that limit the ability of a habitat to sustain a population.
Name the worse threats to biodiversity. loss of natural habitat
What are some examples of non-point source pollution? Washing car, fertilizing the yard, pest control
What are examples of point source pollution? oil spill, factory pollution
What occur in the final stages of succession? shrubs and trees of increasing size
Created by: kcombs
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