WHAT IS THE ROLE OF BACTERIA IN NATURE

Bacteria causes strep throat, ear infections, and other diseases however most bacteria are either harmless or helpful to people.

BACTERIA ARE INVOLVED IN

• Oxygen and food production
• Health maintenance, and medicine production
• Environmental cleanup and recycling

The air you breathe depends in part on bacteria

• As autotrophic bacteria uses the sun's energy to produce its own food it releases oxegen
• Scientists think that autotrophic bacteria were responsible for adding oxegen into the earth's atmosphere
• Today the distant offspring of this bacteria keep the oxegen levels in the air stable
• Bacteria takes in energy from the sun

QUIZ

• Name 2 things that bacteria is involved in.
• How do scientists think that oxegen was added into the earth?
• Who keeps the oxegen levels in the air stable?
• Who's energy does bacteria use to produce its own food

ANSWERS

• Oxegen, food, medicine, health maintenance, recycling and environmental cleanup
• autotrophic bacteria was the cause
• Distant offspring of autotrophic bacteria in
• From the sun