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carbon 14 is a carbon with a radioactive isotope that contains 8 protons and 6 neutrons. when a person dies, the body releases more and more c-14 from it and eventually there will be no more in about 60,000 years later. using c-14, we can find out how old living stuff was, including plants, animals, and humans. tree ring dating was known for a long time. when you look at a cut down tree, you can see that there are rings on it. every year, a trees tissues form a ring. when the weather was dry, there are less tissues so the ring is small and shriveled. when the weather is wet, then there are more tissues and the tree is healthier so it forms a bigger ring. using both of the ways, we can find out when a living being died, and why.

Note by Lucia Vysohlid
1 month ago

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  Easy Math Editor

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)

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Lucia what subject do you put your written answer questions on because it wont let me because all the answers have to be a number or something.

Brilliant Member - 1 month ago

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hey lucia its me sophie i changed my acct. Im dobby dumbledore

Dobby Dumbledore - 1 month ago

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future harvard student: like it. im a future mit student and a future astronaut, pilot, and olympic skier/ ski patrol. todays OEC refresher was awesome! i got a scholarship thingy cuz im underage but they let me in!

Lucia Vysohlid - 1 month ago

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YA i went to harvard on friday and i got to meet 2 of the professors. It was AWESOME!! And I got a sweatshirt. I will wear it to school tomorrow. See you soon Lucia!

Dobby Dumbledore - 1 month ago

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@Dobby Dumbledore i have been at harvard too it was awesome hey if i dont get in MIT can i join u at harvard?

Lucia Vysohlid - 1 month ago

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@Dobby Dumbledore OMG THAT LOOKS SO OOOOOOOO COOL HEY GUESS WHAT I GOT A 45,000$ SCHOLARSHIP AND A 13,000$ SCHOLARSHIP FOR FLIGHT TRAINING/PILOT LESSONS OMG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Lucia Vysohlid - 1 month ago

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why? why? why?..... are you siriusly kidding me? *no pun intended i just spelled it incorrectly and i dont want to delette et cuz im lazy

Lucia Vysohlid - 1 month ago

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learning this in social studies and science

Lucia Vysohlid - 1 month ago

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