Food preservation Killing the microorganisms in food. Stopping their growth.

Refrigeration (Freezing) Low temperature inactivates the microorganisms, thus slowing down the multiplication of microorganisms For example fish and meat

Heating Heating kills the microorganisms and spore.

Canning and bottling Bacteria are killed by heating. Sealing the can in vacuum prevents the entry of microorganism. Microorganism cannot survive in the absence of oxygen in sealed cans.

Preservative can prevent the growth of microorganisms. For example adding sulphur dioxide to fruit juices Cakes

Pasteurization 1):Pasteurization Food is heated to 72 for 15 seconds, then quickly cooled down to 10. 2): Food is heated to for 30 minutes,then quickly cooled down to 10 For example milk and alcohol

Smoking The meat or fish is hung over a charcoal fire. the smoke dries the surface and also coats the meat or fish with substance inhibiting the growth of bacteria

Pickling Food and vegetables.is salted first, the smoke dries the surface and also coats the meat or fish with substance inhibiting the growth of bacteria.

Natural drying (dehydration) It must be less than 15 C. Use the wind or sun to make food dry. For example mushroom,shark’s fin

Biology how to affect in sport ? Seek health is most people to want. most easily method is carry out exercise.Seek health is most people to want. most easily method is carry out exercise. Exercise can :Increase the Physical FitnessExercise can :Increase the Physical Fitness Increase health,decrease to fill ill Increase health,decrease to fill ill

Physical Fitness Physical fitness contain safeguard physical fitness and movement physical fitness.Safeguard physical fitness is human resist pathogen,environment,mechanical pressure……... Movement physical is human exercise ability. It contain movement strength,speed,endurance,action coordinate,body equilibrium.Physical fitness contain safeguard physical fitness and movement physical fitness.Safeguard physical fitness is human resist pathogen,environment,mechanical pressure……... Movement physical is human exercise ability. It contain movement strength,speed,endurance,action coordinate,body equilibrium.

Base essential factor:Base essential factor:.Cardiovascular Endurance.Cardiovascular Endurance.Strength and Endurance.Strength and Endurance.Flexibility.Flexibility.Body Composition.Body Composition.Relaxation.Relaxation

Health and ill Sport is very important for our body. Because it can prevent disease. For example:Sport is very important for our body. Because it can prevent disease. For example: Coronary Heart diseaseCoronary Heart disease OsteoporosisOsteoporosis Other disease.Other disease.

Simple exercise Neck circle round.Neck circle round Function : spread neckFunction : spread neck

Simple exercise Push brace exercisePush brace exercise Function strengthen armFunction strengthen arm

Bend knee exercise Bend knee exercise Function: strengthen foot,buttocks muscleFunction: strengthen foot,buttocks muscle