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Living organisms, Diferents agents:, Human action - Coggle Diagram
Living organisms
Definition: Living organisms, which constantly interact with their surrounding physical environment, are an important geological agent. 
Diferents agents:
Mechanical Weathering
Plant roots find their way between the cracks of rocks. The pressure they exert may even break the rocks
Chemical Weathering
Microorganisms, fungi, lichens, and produce substances that may react with rock components and weaken the rocks.
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Human action
What is human action? The human action, as it says the word, are action that do the human to the nature, for example land movements, atmosphere pollution, overuse of soil...etc
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Atmospheric pollution: The emission of pollution gases are caused by factories, transport that uses gasoline... The pollution gases caused acid rain and the acid rain caused weathering of the rocks and reduce the plants on the floor, that leave exposed to greater erosion.
Land movements: The human displace many land masses to do buildings, build roads, tunnels, citys...etc !
Deforestation: The forestation is when some human cut trees in a forest, and leave the forest without trees.
Extraction of minerals and rocks: The human exctraction minerals and rocks to the earth and to extraction some minerals and rocks it is necessary extract large amounts of land and sometime have destroyed entire mountains.
Activity on continental waters:
Activity on continental waters
The activity on continental waters are dams, canals, reservoirs…etc between rivers, which separate it , and one part alters it much more than the other in terms of inland waters.
Changes on the coastline: The changes on the coastline are water alteration due to the construction of dams and ports that interrupt the erosional activity of marine currents,waves and tides.
Overuse soil: The overexploitation of the soils is to capture a loss of organic matter in the soil, which in the long run are less fertile and suffer greater erosion .
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