Asked by mj

PLEASE GIVE ME THE ANSWERS I DONT KNOW THIS IM BAD AT SCIENCE
Which allowed scientists to determine that Earth was at least 4.3 billion years old?(1 point)

a. magnetic field surrounding zircon

b. the electrical conductivity of uranium ions

c. the radioactive decay of uranium to lead

d. chemical reactivity of zircon ions


tell me all the answers to this please
Answered by mj
if your in 6th grade like me in connexus and bad at science look at this
Answered by Rae shain can someone pleas help
i know the answer are you good a pre algebra i have a question below ill give you the awencer if you can help me pleas help i have watid a hour and this is due in a fue days
Answered by Rae shain can someone pleas help
i am in 8th grade
Answered by mj
this is hardddddddd
Answered by mj
wut are the answers to this
Answered by mj
im kinda good at pre algebra i can try to help but plz gimmie the answers
Answered by Rae shain can someone pleas help
im looking give me a sec im looking at my old note book i have 2 now
Answered by Rae shain can someone pleas help
HEAR YOU GO


1.Zircon is a zirconium silicate mineral with a chemical composition of ZrSiO4. It is common throughout the world as a minor constituent of igneous, metamorphic, and sedimentary rocks. Zircon is a popular gemstone that has been used for nearly 2000 years.

2.Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years.

3.lead-206
Three stable lead nuclides are the end products of radioactive decay in the three natural decay series: uranium (decays to lead-206), thorium (decays to lead-208), and actinium (decays to lead-207).

4.In powder form, zirconium is highly flammable, but the solid form is much less prone to ignition. Zirconium is highly resistant to corrosion by alkalis, acids, salt water and other agents. However, it will dissolve in hydrochloric and sulfuric acid, especially when fluorine is present.

Answered by mj
yea but is it a b c or d i cant tell 0_0
Answered by mj
is this even 6th grade
Answered by Rae shain can someone pleas help
im not sure i only went half of a year and i skipped 7th grade so im in 8th grade and i do online school at ogburn even tho i dont live in florida so idk
Answered by mj
this isnt helping though ;(
Answered by Rae shain can someone pleas help
im sosrry i did gogle i cant realy do more then that sorry (00)
Answered by mj
what do i doooooooooooooooo
Answered by mj
someone plz help me
Answered by mj
forget it imma just fail
Answered by Rae shain can someone pleas help
sorry had to do a vido call look on google and serch the topic and find out what you and refraze it
Answered by Anonymous
the radioactive decay of uranium to lead
Answered by Help is here
the radioactive decay of uranium to lead
The composition of moon rocks and some Earth rocks are similar
4.6 billion years ago
Its hydrogen atoms are heavier than others.
Earth's surface is constantly changing.
Answered by munch
help is here is 100% correct
Answered by Bot
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