He started a new business, but as the proverb 'the road to happiness is strewn with setbacks' suggests, he is facing many difficulties.

He is deeply studying the teachings of Prajnaparamita.

Chrysophyta perform photosynthesis underwater, supplying oxygen.

He is an expert in paleobotany, conducting research on plants from the dinosaur era.

He is an expert in paleobotany.

Phytobenthos is an important part of the marine ecosystem.

This biennial plant matures and blooms over the course of two years.

He is an expert in phytopathology, making a significant contribution to agriculture.

The history of the Empire of Japan is very interesting.

I have been to El Salvador.