Why do many seeds not germinate when there is an excess in the soil?

Most likely, this means that the seeds will be buried in the soil deeper than necessary, since there can be no excess soil. The seeds may not germinate at great depths, since the germinating plants cannot break through to the surface. He lacks air and sunlight, and without them, the process of photosynthesis, which gives the plant energy, is impossible. Also, seeds can be destroyed by mold or bacteria, which are very abundant in the soil. So not all plants can germinate under these circumstances.