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suter [353]
3 years ago
10

Which choice below correctly completes the sentence? _______ reaches the Earth's surface through _______, then turns into ______

_. A. Magma; earthquakes; lava B. Lava; earthquakes; magma C. Lava; volcanoes; magma D. Magma; volcanoes; lava
Chemistry
1 answer:
blondinia [14]3 years ago
4 0

Answer:

d , before the molten rock becomes lava, it is first magma, and most people know that lava is ejected from volcanoes

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3 years ago
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What is the difference in atomic structure between Lead-205 and Lead-208?
Nataly_w [17]

Answer:

  the number of neutrons in the nucleus

Explanation:

The mass number 205 is the total number of protons and neutrons in the nucleus. Lead has 82 protons, so a mass number of 205 indicates a nucleus with 123 neutrons.

Similarly, the mass number 208 indicates a lead nucleus with 126 neutrons.

The difference in atomic structure is the difference in the number of neutrons in the nucleus.

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What was used to build the phylogenetic
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A phylogenetic tree may be built using morphological (body shape), biochemical, behavioral, or molecular features of species or other groups. In building a tree, we organize species into nested groups based on shared derived traits (traits different from those of the group's ancestor).
8 0
3 years ago
For a concentration technique, Stotal is given as 19.31 ± 0.035, Smb is 0.22 ± 0.008, and kA is 0.154 ± 0.007 ppm–1, where Stota
professor190 [17]

Answer:

B

Explanation:

8 0
3 years ago
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lawyer [7]

Answer:

B

Explanation:

you're moving the decimal 8 spots to the left so it can only be B

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