system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How the hell plants/weeds can literally push through concrete without any access to the sun?

Seriously, what sort of voodoo is nature pulling? How does photosynthesis even take place which would cause the plants to grow, much less hulk out and push through stuff far more dense.
gpt
Seeds aren't just plant-growing factories, they are also like batteries. Without any light or leaves to photosynthesise it, the plant burns stored chemical energy in the seed, analogous to a starving human burning through their fat reserves. This is also why seeds can be so nourishing for animals to eat.