Fact 1: Having food has a positive impact on an organism 's health.

Fact 2: Birds and animals eat such food .

Given the two facts above, answer the question "What generally has a positive impact on an organism's health?" with the following options: 
- stay warm
 - sex with multiple partners
 - smoking
 - exercise
 - nutrients
 - eating
 - Cooking
 - fasting


 

      eating   