Learn Turkish: Ekibin geyiği yaban hayatına saldığını biliyorum. - I know that the team released the deer into the wild.

In Turkish, subordinate clauses often work like possession. Just like in the different-subject purpose clauses you are learning right now, the subject of a "that" clause takes the genitive case. So the team (ekip) becomes ekibin, acting as the owner of the releasing action.

How do we break down the word "saldığını"?

The root is salmak (to release). We add the object clause suffix -dık (which softens to -dığ), then the 3rd person singular possessive suffix -ı to match ekibin (the team's releasing). Finally, we add the buffer -n- and the accusative suffix -ı because this entire action is the direct object of the main verb biliyorum.

Why are there two words with accusative endings here (geyiği and saldığını)?

They are the direct objects of two different verbs! The deer (geyik) gets the accusative ending to become geyiği because it is the specific thing being released by the team. The action word saldığını gets its accusative ending because that entire clause is the specific thing that you know (biliyorum).

How is the phrase "yaban hayatına" constructed?