Directions: Match each word on the left with its description on the right by writing the correct letter on the space provided.

1. Organism that is also called as single-celled organism
2. Example of a multicellular organism
3. Organisms that do not have a nucleus
4. By-product of photosynthesis
5. Organisms that are capable to live without oxygen
6. Organism that uses CO2 and sunlight for food
7. Person who studies fossils
8. A process that utilizes CO2 and sunlight
9. Fossils that are microscopic in size

a. unicellular
b. prokaryotes
c. anaerobes
d. Paleontologist
e. microfossils
f. photosynthesis
g. photosynthetic
h. Oxygen
i. sponge​