system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How the grass is still alive after being covered by snow for months?

Since it can't get any sunlight, how does it all not just die off?
gpt
There is a rule in chemistry, for every 10oC you raise the temp of a reaction, you double the reaction rate.  The reverse is true, the colder, the slower the reaction.  

Since it is so cold in winter, the metabolic reactions (the plant cells eating) are so slow, that a small amount of food is enough to hold the plant for the whole winter.