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Gutnik, Martin J
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gutnikmartinj
Recycling
Submitted by
khenkes
on Mon, 02/24/2020 - 15:25
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about Recycling
Ecology and pollution
Gutnik, Martin J
1973
Instructions for experiments illustrating the characteristics of a freshwater ecosystem, water pollution, and water purification.
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about Ecology and pollution
The energy question
thinking about tomorrow
Gutnik, Martin J
1993
Examines the limited supplies of fossil fuels left to us and discusses alternative sources of energy.
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about The energy question
How plants are made
Gutnik, Martin J
1975
Describes experiments demonstrating how a green plant uses its cells and tissues to make food.
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about How plants are made
The challenge of clean air
Gutnik, Martin J
1990
Explores the scientific, technological, and social background of the many environmental problems plaguing our air and atmosphere.
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about The challenge of clean air
How plants make food
Gutnik, Martin J
1976
Uses experiments to explain how plants use carbon dioxide and water in conjunction with light to make food.
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about How plants make food
Recycling
Submitted by
khenkes
on Tue, 07/18/2017 - 08:37
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about Recycling
The science of classification
finding order among living and nonliving objects
Gutnik, Martin J
1980
Explains the science of classification--the process of placing related objects into groups.
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about The science of classification
Ecology
Gutnik, Martin J
1984
A collection of environmental science projects which demonstrate the delicate balance of ecological systems and how both people and nature can destroy this balance.
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about Ecology
Madagascar
Gutnik, Martin J
1995
Explores the animals, plants, and people of Madagascar, the fourth-largest island in the world.
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about Madagascar
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