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zhannawk [14.2K]
3 years ago
6

On the time line above, cells with a nucleus first appeared on Earth between

Biology
1 answer:
lorasvet [3.4K]3 years ago
6 0

Answer:

These answers are A and C

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Fill out the chart below using the periodic table.
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The number of neutrons for oxygen is 8, for zinc it is 35, and for lithium is 4. To find the number of neutrons you have to do atomic mass - atomic number.I rounded the answers to find the #of neutrons.

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Some neurons enable you to grasp objects by relaying outgoing messages to the muscles in your arms and hands. these neurons are
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Which is a method that scientist used to determine the composition of earths layers
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Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. The seismic waves are bent, sped up, or slowed down, or even reflected when they pass through the earth's layers.

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