but if the grain has become moistened, it becomes unclean to you when any part of their carcasses falls on it.
You become unclean by the following—anyone who touches their carcasses shall be unclean until evening,
If any part of their carcasses falls on any sort of grain that is to be sown, it remains clean;
When one of the animals that you could otherwise eat dies of itself, anyone who touches its carcass shall be unclean until evening;