Hello,

in this sentence "beslenmenin sağlıklı bir hayatın önemli bir şartı olması". I don´t understant the "beslenmenin" and "olması" can someone explain it 

thanks

Nutrition´s being an improtant condition of a healthy life is a fact.

I completed the sentence with "is a fact" This is how we form the same sentence below in English:

It is a fact that nutrition is an important condition of a healthy life.

I didn´t understand can you explain it more and its rule

Hi pekka,

First of all, this sentence has no verb and it is incomplete. I will complete the sentence in order to explain better.

Beslenmenin sağlıklı bir hayatın önemli bir şart olması sebebiyle yediklerimize dikkat etmeliyiz.

Since nutrition is one of life´s important requirements, we should pay attention to what we are eating.

Beslenmenin ... olması - nutrition is

The words between these two are complementary as you see. And that whole part of the sentence is the adverb of this sentence.