Ecology is a field of study that investigates the interrelationships of organisms in the natural world.

This substance undergoes a chemical change when heat is applied.

In this experiment, the substance will undergo a chemical change.

He is majoring in agronomy at university.

Have a good day at school, son.

When her son goes to school, the mother always says 'see you later'.

The ancient Sarugaku can be said to be the prototype of modern theater.

This cookie crumbles easily.

This cookie is characterized by its soft and light texture.

Beautiful sal trees are planted in the park.