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LenaWriter [7]
1 year ago
12

An oak tree provides food for many animals. The oak tree is found at which level of the energy pyramid?

Biology
1 answer:
Dominik [7]1 year ago
7 0

Answer:

c.

Explanation:

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c. is a biotic factor within an ecosystem

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A first-hand source such as an experiment is called a _____.
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A first-hand source such as an experiment is called a primary source. 

A primary source is where you can share new information or report on what you have discovered. Some primary sources are research data, interviews, audio recordings, and autobiographies.

A secondary source is where you describe and discuss about the primary sources. They are used to collect and gather primary source information. Some secondary sources are textbooks, review articles, and scholarly books.

A tertiary source is a source about summaries. A tertiary source can be used to look up information or get an overview about what it is you are wanting to know. Some tertiary sources are dictionaries, handbooks, encyclopedias, Wikipedia, and guidebooks.
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