Chapter 2

Chapter 2 - Chapter 2- Adaptations to the Physical...

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Chapter 2- Adaptations to the Physical Environment Properties of Water o Thermal properties Water resists changes in temperature so it stays liquid over a broad range of temps Keeps large bodies of water from freezing solid Thermal energy spreads evenly through a body of water o Density and viscosity 800 times more dense than air provides support for organisms because they are mostly water themselves it is viscous, meaning that it resists flow or movement of a body through it fish have gas filled chambers to make themselves the same density of water fish have streamlined shapes to move easier in water and decrease drag Organic nutrients dissolved in water o Solvent capacity of water Impressive capacity to dissolve various substances Very powerful solvent because water molecules are strongly attracted to many solids Ions- electrically charged atoms or groups of atoms Responsible for presence of minerals in bodies of water “hard” water has high concentrations of dissolved calcium runoff and precip picks up minerals as it returns to bodies of water oceans serve as a sink, concentrating minerals as runoff and precip arrive and pure water evaporates there is a certain level to which a certain amount of water can hold of a mineral o
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This note was uploaded on 03/12/2012 for the course PB 360 taught by Professor Wentworth during the Fall '08 term at N.C. State.

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Chapter 2 - Chapter 2- Adaptations to the Physical...

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