TED-Ed: Got seeds? Now add bleach, acid and sandpaper - Mary Koga

The video discusses the importance of seed scarification for plant growth, especially in a post-apocalyptic scenario where rebuilding civilization depends on it. It explains that seeds have hard coats that need to be worn down for germination, a process called scarification. While natural processes like cold temperatures and animal digestion can achieve this, human methods like nicking, filing, soaking in water, and using sulfuric acid can accelerate it. These techniques help moisture and nutrients reach the plant embryo, increasing the chances of successful germination.

Describe the method of 'nicking' and its purpose.

What precautions should be taken when using sulfuric acid for seed treatment?