gettenberg - biology - chapter 1 section 1
DESCRIPTION
Biology ch 1 sec 1 ppt from Mcdougall Littel Bio bookTRANSCRIPT
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1.1 The Study of Life
KEY CONCEPT Biology is the study of all forms of life.
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1.1 The Study of Life
Earth is home to an incredible diversity of life.
• The biosphere includes all living things and all the places they are found.
biosphere = everywhere life exists
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1.1 The Study of Life
Earth is home to an incredible diversity of life.
• Every part of the biosphere is connected with every other part.
• The biosphere includes many environments.– land environments
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1.1 The Study of Life
• The biosphere includes many environments.
– saltwater and freshwater environments
– portions of the atmosphere
Tidepool Estuary
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1.1 The Study of Life
– Biodiversity generally increases from the poles to the equator.
– Biodiversity is greater in areas with consistently warm temperatures.
• Biodiversity is the variety of life.
Biodiversity is greater closer to the equator.
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1.1 The Study of Life
– Members of a species can interbreed to reproduce. – There are about 2 million different living species
have been identified.
• A species is one particular type of living thing.
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1.1 The Study of Life
All organisms share certain characteristics.
• Biology is the scientific study of all forms of life.
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1.1 The Study of Life
• An organism is any individual living thing.
– All are made of one or more cells.
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1.1 The Study of Life
– All need energy for metabolism.
• An organism is any individual living thing.
– All are made of one or more cells.
– All respond to their environment.– All have DNA that they pass on to offspring.