Impact of Natural Events and Human Activity on Organisms

Question Answer
Extreme events classified by the extent of their impact on the ecosystem. Examples include: Avalanches, Droughts, Earthquakes, Epidemics, Forest Fires, Landslides/Mudslides, Sinkhole, Terrorists Attacks, Tsunamis, Volcanoes, War. Catastrophic Events
An overflow of accumulation of the water that submerges land. Flooding
A severe tropical cyclone usually with heavy rains and winds. Hurricane
A localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground. Tornado
The BREAKDOWN and changes in rock and sediments at or near the Earth's surface produced by biological, chemical, and mechanical agents. Weathering
The breaking down of rocks that changes the chemical composition of the rock through carbonation, hydration, and or oxidation. Chemical Weathering
The breaking down of rocks into little itty bitty pieces by the changes in temperature, abrasion, and plant roots. Mechanical Weathering
The process of which water, wind, ice, and gravity remove and transport or carry away sediments from one place to another. Erosion
The Depositing of sediments and soil into a new location.
(Deposit- Moving elsewhere)
Area of LOOSELY packed soil that are saturated with water and located beneath the surface of the Earth. Aquifers
Hazardous materials (such as pesticides, antifreeze, motor oil, paints) that enter the watershed and pollute the water. Contaminants
Triangle-shaped landforms at the mouth of a river formed by the deposit of sediments as it empties into another body of water. Deltas
Water that collects in cracks and pored underGROUND soil and rock layers. Groundwater
Small pieces of rocks. Sediments
Water on the surface of the Earth that comes from precipitation – Lakes, rivers, etc. Surface Water
An area of LAND where the water that runs off the land drains into local rivers, streams, lakes and wetlands. Watershed
An area below the surface where the ground is saturated with water. Water Table

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