General Science Questions

Animals active at night are known as Nocturnal.

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.

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.  

Yellow Journalism refers to a type of journalism with the use of lurid features like eye catching head lines and sensationalized news in newspaper publishing to attract readers and increase circulation. The techniques that are used in this journalism may include exaggerations of news events, scandal-mongering, or sensationalism.