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makkiz [27]
3 years ago
8

Which statement best describes why a pond ecosystem could be considered an open system?

Biology
1 answer:
masha68 [24]3 years ago
7 0
Pond ecosystem considered as an open ecosystem because pond is always open . There is an interaction of pond with atmosphere , due to which it ecosystem becomes open.

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Answer:

\boxed {\tt 3}

Explanation:

An element only has <u>one</u> type of atom and cannot be broken down by chemical means.

Let's analyze the answer choices.

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2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.

3. This has one type of atoms, so it is an element.  

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