He is interested in the history of the Old World.

Please teach me how to find the greatest common divisor.

Insects are an important part of the natural world.

Primates are a group of mammals that include humans.

My grandfather is skilled in raising domestic fowls.

I love root crops, especially carrots.

It's fun to see colorful butterflies in the park.

The beauty of butterflies is breathtaking.

This sinusoid is a channel for carrying venous blood.

Lichens can survive even in harsh environments.