In order to understand his feelings, I had a deep conversation with him.

God only knows what he is thinking.

I have no way of knowing what he is thinking.

He is working hard to make his abilities known to the world.

It's better for him not to know the truth. After all, ignorance is bliss.

Chrysophyta perform photosynthesis underwater.

He ended up in a vegetative state after the accident.

We are planning to go to the botanical garden this weekend.

There are many houseplants in my room.

There are many succulent plants in my room.