In organic chemistry, cyclobutane has a structure in which four carbon atoms are bonded in a ring.

He was just looking from a distance while the problem was happening.

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

The study of benthos is an important field in marine biology.

Phytobenthos is an important part of the marine ecosystem.

He is an expert in applied physics.

Invasive species can have a major impact on the natural environment.

She has zoophobia, so she can't go to the zoo.

Despite their simple body structure, nematodes have surprisingly complex ecosystems.

My uncle is a famous zoologist.