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omeli [17]
4 years ago
15

Why is the energy transfer between trophic levels not even close to 100% efficient

Biology
1 answer:
Mama L [17]4 years ago
8 0
Because they are energy. 
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nadezda [96]

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which is an example of an acquired trait? A the ability to hear B the ability to write C color vision D body hair
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B . ability to write
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Why is density a derived unit?
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Density is a derived unit because it's not reported as a pure unit. (A pure unit would be something like kilograms or meters.) In contrast, the units for density are kg/m3. Density is the ratio of mass to volume; mass has the unit 'kilograms' (kg) and the unit for volume is cubic meters (m3).

Density is an intensive property, which means the amount of the material is irrelevant. The density of a substance is constant.

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According to the cell theory, where do cells come from?
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A.

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