YOU SAID:

Scientist has proven that there is going to be lots of people

INTO JAPANESE

科学者は、たくさんの人々がいることを証明しました

BACK INTO ENGLISH

Scientists have proven that there are a lot of people.

INTO JAPANESE

科学者はたくさんの人がいることを証明した。

BACK INTO ENGLISH

The scientist proved that there were many people.

INTO JAPANESE

科学者はたくさんの人がいることを証明した。

BACK INTO ENGLISH

The scientist proved that there were many people.