### Instruction:

Extract the cause and effect entities from the following sentence:
The first set of observations enables quantification of the distribution and variability of CO2 fluxes between the Earth's surface and the atmosphere

### Assistant:

VARIABLE: variability of CO2 fluxes between the Earth's surface and the atmosphere
CAUSE_1: The first set of observations
CONDITION: enables
AND: and
EFFECT_1: quantification of the distribution
EFFECT_2: variability of CO2 fluxes between the Earth's surface and the atmosphere

