rare element very low carbon are composed of symmetrical triangle that have very much, and which are closely linked in the mirror and solid form what can ...

Answer 1

I cannot make sense of your question, either scientifically or grammatically.
All elements except carbon have "very low carbon". They have none at all.

"..that have very much (what?)"

What does "closely linked in the mirror" mean?

This seems like a question translated from another language using poor computer software. If so, try the original language.