Insects have an exoskeleton, which protects their body.

The human endoskeleton is made up of 206 bones.

He passed the book to me.

The problem of overfishing is having a serious impact on marine ecosystems.

Due to overfishing, there is a possibility that the marine ecosystem could be destroyed.

We need a change in the education system.

He is evaluated as a competent politician.

Paying the urban planning tax is a citizen's duty.

I reserved a room at the hotel.

We are planning to expand our business.