Why is deuterium oxide called “heavy water”?(1 point)
Responses
It has extra oxygen atoms.
It has extra oxygen atoms.
Its hydrogen atoms are heavier than others.
Its hydrogen atoms are heavier than others.
Its oxygen atoms are heavier than others.
Its oxygen atoms are heavier than others.
It has extra hydrogen atoms.
3 answers
Its hydrogen atoms are heavier than others.
Why is it hard to find the age of Earth?(1 point)
Responses
Earth's surface is constantly changing.
Earth's surface is constantly changing.
There is no way to find the age of rocks.
There is no way to find the age of rocks.
There are too many layers of Earth.
There are too many layers of Earth.
The Earth is constantly moving.
Responses
Earth's surface is constantly changing.
Earth's surface is constantly changing.
There is no way to find the age of rocks.
There is no way to find the age of rocks.
There are too many layers of Earth.
There are too many layers of Earth.
The Earth is constantly moving.
Earth's surface is constantly changing.
1 answer