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Veseljchak [2.6K]
3 years ago
14

Explain why a natural ecosystem is both an open system and a closed system.

Biology
1 answer:
kotykmax [81]3 years ago
3 0

Answer:An open system exchanges matter and energy with its surroundings (for example, an ecosystem). ... Strictly, closed systems do not occur naturally on Earth, but all the global cycles of matter, for example,the water and nitrogen cycles, approximate to closed systems.Sep 18, 2020

Explanation:

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The blood test used to measure the volume of erythrocytes is
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Answer:  " erythrocyte sedimentation rate (ESR) " .

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3 years ago
Determine whether each Statement illustrates an example of qualitative or quantitative data B Sample A is heavier than Sample Sa
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Each statement illustrates an example of qualitative data since there is no mention of any quantitative value.

<h3>What is meant by qualitative analysis? </h3>

The determination of non-numerical values which gives information about the species participating in a chemical reaction is called qualitative analysis. For example, analysing the products of the reaction or the time it takes for product formation.

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No such analysis is made in the case of qualitative analysis which makes this kind of analysis less reliable and data-oriented.

Therefore, the statements mentioning which sample is heavier, which sample takes longer to react and which sample increased the temperature by 3 degrees are all statements which are examples of qualitative analysis.

Read more about qualitative analysis, here

brainly.com/question/6955504

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