He is deeply involved in the animal liberation movement.

Protozoans are single-celled organisms.

As the name suggests, chordates are a group of animals that have a notochord.

He is an excellent doctor.

He is a famous author, and his works are loved by many readers.

He likes to take a walk in the park at dusk.

My spouse is a doctor.

When it reaches absolute zero, the molecular motion of matter stops.

Absolute monarchy refers to a political system where all the power of a nation is concentrated in one monarch.

There is a proverb that says 'even a dog wouldn't eat a marital dispute,' so we should not interfere in their problems.