A marginal $ 5000 should go to:
Farmed animal welfare should be addressed first. I think this is an important step in our moral circle expansion (e.g. caring enough about animals to stop actively harming them.) I’m not an deep environmentalist, but there’s also more moral uncertainty about messing with nature (what if wild animals have good lives? What if nature has inherent value?)
There seems to be significant disagreement about the coefficient and even the sign of the impact of various interventions on animal welfare.