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Step 1
Place cotton wool in three petri dishes
Step 2
Label them A B D
Step 3
Add water to dishes B and D
Step 4
Pace cress seeds on the cotton wool of each dish
Step 5
Place dish B in a fridge
Step 6
Leave the others at room temperature
Step 7
Check dishes and record results. Only control dish should germinate
How to prepare anaerobic conditions?
Boil water and let it cool. Place seeds in and add oil to prevent oxygen from reentering