This is the 1840th most frequent Turkish word.
dünyadaki
"Of/at/in the world."
Here, 'dünyadaki' is used as an adjective that qualifies 'en yüksek dağ', meaning 'the highest mountain in the world'.
Dünyadaki en yüksek dağ Everest'tir.
The highest mountain in the world is Everest.
In this sentence, 'dünyadaki' serves as an adjective describing 'insanlar', emphasizing that these people are those 'in the world'.
Dünyadaki insanlar çeşitli kültürlere sahiptir.
People in the world have various cultures.
Here, 'dünyadaki' is used to specify that the 'doğal güzellikler' (natural beauties) are those found 'in the world'.