Chrysophyta perform photosynthesis underwater, supplying oxygen.

He is an expert in paleobotany.

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

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

Phytobenthos is an important part of the marine ecosystem.

A comprehensive reform is necessary to eradicate the root of the problem.

He tried to solve the problem radically.

Please find the cube root of this number.

He didn't move, like a stump.

He fractured his tarsal bone.