What does c6h12o6 + 6 o2 6 co2 + 6 h2o mean

This equation is the conversion of CO2 and H2O to glucose ( a carbohydrate). Such reaction takes place in presence of sunlight and a green plant pigment (chlorophyll). The reaction is called photosynthesis. 
This reaction is carried out by plants and oxygen gas is released to the atmosphere.

This process is involved in photosynthesis.

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The answer is frictional force

For me a person with a phd and who knows what there talking about.i know the chances of a radiation leak is low but if it does the area within a 96.3 mile radius would be unusable because of contamination