P16. WATER DROP

OBJECTIVES:

• Observe drops of diferents waters (water fishbowl and water of river) 

MATERIAL:

• Water fishbowl

• Water river

• Microspcope

• dropper

• slide and coverslide

PROCEDURES: 

1. prepare two samples of different water drops.

2. put the drops slide the cover and copper objects

3. and observe the bacterias, arthropots and protozoans