#chemical elements

1 channels found

BBC World Service

A close look at chemical elements, the basic building blocks of the universe. Where do we get them, what do we use them...

#chemical elements #building blocks #universe #economy

US Education

0:00 0:00

home.no_channel_info

Profilu Attēls

Segvārds

Segvārdam jābūt vismaz 2 rakstzīmēm.