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

Fact 2: Plants and animals are organisms.

Given the two facts above, answer the question "What are cells in plants and animals?" with the following options: 
- production of energy
 - absorb light energy
 - large building blocks
 - sub-units of species
 - cellulitis
 - microscopic bulding blocks
 - disease
 - microorganisms


 

      microscopic bulding blocks   