In philosophy, natural law refers to the moral laws of the universe.

My biological clock is disrupted, and I've been having sleepless nights.

The equilibrium length of this spring is 5 centimeters.

He prefers natural foods.

This wood may spontaneously combust if the humidity is high.

His car spontaneously combusted all of a sudden.

Natural rights are rights that humans have from birth.

Invasive species can have a major impact on the natural environment.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

I am majoring in microbiology at university.