Fact 1: Some parasites kill their host, but most do not.

Fact 2: All parasites are harmful to their host, but some are beneficial to humans.

Given the two facts above, answer the question "Some what are beneficial to humans?" with the following options: 
- fungi
 - parasites
 - roots
 - humans suffering
 - natural disasters
 - honeybees
 - poisons
 - orchids


 

  parasites       