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4
|
functions of nature, such as purification of air and water, which support life and human economies
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5
|
the rate at which producers use photosynthesis to produce and store chemical energy minus the rate at which they use some of this stored chemical energy through aerobic respiration
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7
|
consumers that release nutrients from the dead bodies of plants and animals and return them to the soil, water, and air for reuse by producers
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8
|
they feed on the wastes or dead bodies of other organisms
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9
|
new discoveries and new ideas that overthrow a well-accepted scientific theory or law
|
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10
|
a set of organisms interacting with one another and with their environment of nonliving matter and energy within a defined area or volume.
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11
|
creates the nutrients they need from compounds and energy obtained from their environment
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12
|
a possible and testable explanation of what they observe in nature or in the results of their experiments
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13
|
A sequence of organisms, each of which serves as a source of food or energy for the next
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14
|
consists of the parts of the earth’s air, water, and soil where life is found
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|
|
|
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|
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1
|
organisms in most ecosystems form a complex network of interconnected food chains
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2
|
the dry weight of all organic matter contained in its organisms.
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3
|
anything obtained from the environment to meet our needs and wants.
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4
|
exist in a fixed quantity, or stock, in the earth’s crust.
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6
|
the annual market value of all goods and services produced by all firms and organizations, foreign and domestic, operating within a country.
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