4. What are the consequences of planting seeds too deeply?

i got it from goo gle

Seeds that are planted too deep in the soil may grow into weak, feeble seedlings or fail to germinate at all. If it's been buried too far under the surface of the soil, the seed may not get the light it requires to sprout.

this answer is correct

not much but planting too deep will make hard for your seed to germinate..