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science test ch. 1 review (15 Cards)

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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.

Flashcard set info:

Author: Rebecca

Main topic: Science

Topic: Natural Cycles

School / Univ.: Freedom Baptist Schools

City: Hudsonville, MI

Published: 03.02.2010

Tags: rebecca thomas

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science test ch. 1 review (15 Cards)