Fact 1: Grasses supply most of the food consumed by people worldwide.

Fact 2: Grasses are also important food for waterfowl.

Given the two facts above, answer the question "important food for waterfowl supply most of the food consumed by what?" with the following options: 
- agriculture
 - it needs them
 - keeps the organism warm
 - people worldwide
 - our planet
 - monkeys in trees
 - tigers in the wild
 - wolves in nature


 

    people worldwide     