General Science Questions

A duty or task that needs to be fulfilled is a responsibility that needs to happen.

For example : a doctor has his own task or responsibility, a police, a lawyer, etc... all have their own responsibilities.  

Inhaling of oxygen and releasing of carbon dioxide to make our living is the process called as respiration. We know that, air is a mixture several gases like 78% of nitrogen, 21% of oxygen and several other gases with watervapour.

Hence, Oxygen is essential for respiration process.

The design principle that is based on repetition is called Rhythm.

A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. A cold front usually bring the temperature down by more than 15 deg and heavy rainfall with thundering and lighting.

The thermometer that is used to measure body temperature is called as Clinical or medical thermometer.

A Carbon Dioxide Fire extinguisher is a specific type of fire extinguisher that can be used on electrical fires and liquid flammable type of liquids and gases.