How could the situation in haiti be improved?

In Haiti, UN workers accidentally introduced cholera.

The UN did not dispose of human waste correctly. This caused cholera to spread to local people.

The situation in Haiti could be improved by screening UN workers for illness, increasing water sanitation, and providing adequate sewage treatment.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

this is a good question! i'll do some research and come back when i have the answer!