It is the only way they can eat.
Explanation:
Primary succession is a type of succession which takes place on the land which is never vegetated in the history of the earth that is barren.
The land could be formed due to volcano eruption, the land formed by the lava flowed from the volcano, land formed due to retreat of the glacier and the new island.
In my community, neither volcano nor glacier retreat can be observed but the "agriculture barren land" can be considered the case of primary succession as it is the only land which is not vegetated.
Transgenic.
this is also sometimes called gene targeting.
Every man for themselves, only the strongest will survive through whatever environment they may be put in.