4. This experiment below has not started yet. It is meant to test how light affects seed germination. What needs to be fixed so that it is a fair test (a controlled
experiment)?
Daily water: 70 mL
Seed A
Sprouts: 0
Heat: Low (18°C)
Daily water: 70 mL
Seed B
Sprouts: 0
Heat: Low (16 °C)
IM
Daily water: 70 mL
Seed C
O A Use the same amount of light for all three trays.
OB. Use the same type of seeds in all three trays.
OC. Turn the heat to high under all three trays
OD. Use three different amounts of water and heat for the three trays
Sprouts: 0
2 Heat: Low (16 °C)