YOU SAID:

Are there enough humans on earth?

INTO JAPANESE

地上には十分な人間がいるのだろうか。

BACK INTO ENGLISH

Is there enough people on earth?

INTO JAPANESE

地上には十分な人がいるのですか。

BACK INTO ENGLISH

Is there enough people on the ground?

INTO JAPANESE

地面には十分な人がいますか？

BACK INTO ENGLISH

Is there enough people on the ground?