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Alle Oberthemen / Science / Natural Cycles

science test ch. 1 review (15 Karten)

Sag Danke
1
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Which of the following is not one of the elements most abundant in living things?
helium
2
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A pollutant released into the atmosphere is...
an emission
3
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Releasing nitrogen from the soil back into the atmosphere is called?
denitrification
4
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Converting nitrogen in the atmosphere into a form that can be used by plants is?
nitrogen fixation
5
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Which of the following hosts nitrogen-fixing bacteria in nodules on its roots?
a legume
6
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The process by which an organism's body releases energy from carbon-based molecules is called?
cellular respiration
7
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Which process describes how plants make sugar from sunlight, water, and carbon dioxide?
photosynthesis
8
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Air pollution can be caused by burning too many...
fossil fuels
9
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When precipitation gathers into a body of water it is called...
collection
10
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The precipitation that flows over the surface of soil
runoff
11
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A swelling on a plant root that contains nitrogen-fixing bacteria
nodule
12
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The brown smog produced when air pollutants react with sunlight
photochemical smog
13
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the cycling of chemical elements through the living and nonliving parts of an ecosystem
biogeochemical cycle
14
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Why should you never turn the adjustment knobs on a microscope too quickly?
If you adjust it too quickly, you can break the slide or the objective lens.
15
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What are two ways  in which cutting down the trees in a forest affect the ecosystem/
It can make the ecosystem lose nitrogen.  It can also cause too much carbon dioxide to build up since there would not be enough producers to use the carbon dioxide.
Kartensatzinfo:
Autor: Rebecca
Oberthema: Science
Thema: Natural Cycles
Schule / Uni: Freedom Baptist Schools
Ort: Hudsonville, MI
Veröffentlicht: 03.02.2010
Tags: rebecca thomas
 
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