His research is drawing society's attention to environmental issues.

I have a waist pouch.

I collected sand on the beach and made a sandcastle.

This sand is very fine.

This box contains 100 units of sand.

I haven't heard any news from him at all.

Meihara-san raises cows on her farm.

He said he wanted to travel to the seven continents.

Mr. Nana is my best friend.

He ate seven apples.