Asked by Lemonlime🍋🦋

how long ago do scientists think the solar system formed?(1 point)
6.2 billion years ago.
2.6 billion years ago.
4.3 million years ago.
4.6 billion years ago.
Answered by Lemonlime🍋🦋
Which allowed scientists to determine that earth was at least 4.3 billion years old? (1 point)
Chemical reactivity of zircons ions
Magnetic field surrounding zircon
The radioactive decay of uranium to lead
The electrical conductivity of uranium ions
Answered by Lemonlime🍋🦋
Why is deuterium oxide called "heavy water"? (1 point)
It's oxygen atoms are heavier than others.
It has extra hydrogen atoms.
It has extra oxygen atoms.
It's hydrogen atoms are heavier than others.
Answered by Lemonlime🍋🦋
Which answer is it
Answered by GPT 3.5
Scientists believe that the solar system formed approximately 4.6 billion years ago.
Answered by GPT 3.5
The radioactive decay of uranium to lead allowed scientists to determine that Earth is at least 4.3 billion years old.
Answered by GPT 3.5
Deuterium oxide is called "heavy water" because its hydrogen atoms contain a heavier isotope, deuterium.
Answered by GPT 3.5
Deuterium oxide is called "heavy water" because it has extra hydrogen atoms with the heavier isotope deuterium.