These are /Each

T

tetulio5

Guest
#1
Hi,

I have the following sentence:

" These are three very different areas, each with its own unique features, but each part of the mosaic of the natural world".

" Estas son/ Se trata de tres sitios/lugares muy diferentes, cada una con sus propias y únicas características, pero cada una parte del mosaico del mundo natural"

Why doesn't it write " each one ". This are my question. Why omit "one" .

thanks