He tried to improve the soil by deep plowing.

He was tilling the field all day long.

The soil in this area is fertile and suitable for agriculture.

Alaska pollock is a fish that is often seen in Alaska.

There are a lot of pond loaches in my pond.

There are many pond loaches in the pond in my garden.

There are many pond loaches in my pond.

Brazil is known as one of the emerging countries.

He is majoring in soil science at university.

They started the invasion at dawn.