He is an expert in paleozoology and has a deep knowledge about the ecology of dinosaurs.

He has a deep interest in paleozoology.

The ecosystem of zoobenthos is an important field of study in marine biology.

The failure of the project was due to a situation where too many cooks spoil the broth.

I have been to El Salvador.

Anthropozoonosis, or animal-derived infectious diseases, have the potential to spread between humans and animals.

Zoonosis is a disease that spreads from animals to humans, or vice versa.