Catholics believe Godcreatedworld out of nothing (exnihilo) - nothingexistedbefore and he createdeverything - God is the creator as first verse in Bible says “InthebeginningGodcreatedtheheavensandtheearth” Genesis 1:1
Only God can create ex nihilo as he’s omnipotent.
BeliefGod is sustainer as aftercreating the world he‘s stillinvolved in the world - idea that everything in the worlddepends on Godforit’sexistence.
God created world in sixdays, rested on the seventhday - created animals and humanbeingsimagodei - specialplace in creation as we have freewill and a soul.
In Genesis creation story, humans are given authority to rule over alllivingthings - humans are given the responsibility by God to be stewards and look after and preserve for future generations - inreturn for good stewardship, earth provides everything humans need to survive, don’tabuseresources, but livesustainably.
Genesis says human life is precious and sacred and humans have been created to have a close relationship with God and care for everything he created.