Fact 1: Cells are the microscopic building blocks of organisms.

Fact 2: Fish Fish are the ultimate aquatic organism.

Given the two facts above, answer the question "Cells are the microscopic building blocks of what?" with the following options: 
- viruses
 - plants
 - fish
 - the Moon
 - the Sun
 - Man
 - live
 - life


 

   fish      