Grasses supply most of the food consumed by people worldwide, and grasses are also important food for waterfowl. Given these facts, important food for waterfowl supply most of the food consumed by what among 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     