The balanced equation for photosynthesis is shown below.

6 co2 + 6 h2o → c6h12o6 + 6 o2

which statement best justifies the conservation of mass during photosynthesis?

the total number of carbon atoms on both sides is 6.
the total number of hydrogen atoms on both sides is 18.
the number of oxygen atoms is equal to the number of carbon atoms on each side.
the number of oxygen atoms is equal to the number of hydrogen atoms on each side.

The total number of carbon atoms on both sides is 6.

6CO₂ + 6H₂O     →     C₆H₁₂O₆ + 6O₂

Number of atoms on each side:

C = 6

O= 18

H= 12

european union policies. the eu's long-term objective is to achieve levels of air quality that do not result in unacceptable impacts on, and risks to, human health and the environment. eu policies aim to reduce exposure to air pollution by reducing emissions and setting limits and target values for air quality.

the main environmental problems in western europe were: energy production/acid rain, nuclear power/waste, air pollution/climate, heavy metals, pesticides, water pollution, solid waste, and unforeseen accidents. many environmental problems are common to most european countries.