Select all of the answers that apply.

how is heat transferred on earth?

air cells
radiation
convection
nitrogen cycle
insulation
conduction

Option

B) Radiation

C) Convection

D) Conduction

Explanation:

The heat is transferred through three methods on planet earth-  

a)Conduction – The heat in conduction is transferred from molecule to molecule and thus contact between two things is necessary for heat transfer. For example – the surface of earth absorbs heat and eventually transfers it to the air near to it. Thus the air which is close to earth’s surface is warmer than air above it.  

b)Convention – In this the heat moves from place to place such as movement of warm air

c)Radiation – Greenhouse gas affect is caused by back radiation of heat from earth’s surface .

the sphincter muscles at the end of the digestive tract is the anus.