Question

What would happen if the sun's light was blocked for a year

Answer 1

the end of life on Earth probably within a matter of years or decades

Step-by-step explanation:

A permanent blockage of sunlight, or if our star went dark, would pretty much mean the end of life on Earth probably within a matter of years or decades (cave dwelling organisms and/or deep ocean critters that derive their energy from ocean volcanic vents might survive).