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e-lub [12.9K]
3 years ago
5

What is Group 13 period 5 on the periodic table

Biology
1 answer:
Maksim231197 [3]3 years ago
8 0

Answer:

Boron is the fifth element of the periodic table (Z=5), located in Group 13. It is classified as a metalloid due it its properties that reflect a combination of both metals and nonmetals. Aluminum (also called Aluminium) is the third most abundant element in the earth's crust.

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In every trophic level, only 10% of energy is passed on.
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A geochronological scale measured in Millions of Years Ago or M Y A. Mesozoic era: Triassic period, 250 to 201 MYA, first dinosa
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Answer:

<em><u>D. The first flowering plants were introduced toward the end of the Mesozoic era.</u></em>

<em><u /></em>

Explanation:

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By the end of the <em>Mesozoic Era</em>, in the Cretaceous period, flowering plants (angiosperms) largely replaced the dominant seed ferns of the <em>Triassic</em>, and the conifers, cycads and gymnosperms of the <em>Jurassic</em>.

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<span>The twisted ladder shape of DNA is called a double </span>helix.
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