My father bought a new tiller.

My father bought a new cultivator.

My father bought a new tiller.

He came into my room forcibly without asking.

We are recruiting labor for a new project.

Francium is a radioactive alkali metal that is hardly present in nature.

Actinium is a radioactive chemical element with the symbol Ac and atomic number 89.

Americium is one of the radioactive elements.

Sea turtles play an important role in the marine ecosystem.

Sea turtles are beautiful creatures of the sea.