He is an expert in paleoanthropology, investigating archaeological sites around the world.

He is an expert in primatology and is engaged in the study of gorilla behavior.

He is famous as a countertenor singer.

Odd-toed ungulates include mammals such as horses and camels.

Even-toed ungulates are a large group of animals that include some livestock such as cows and sheep.

The great majority of people are in favor of this plan.

He is an amazing polyglot who can speak five languages fluently.

Polyarchy refers to a political system where many people share power.

He never misses his multifidus muscle training every day.

He faced many difficulties before he succeeded, but as they say, the road to happiness is strewn with setbacks.