Which of the two, adsorption or adsorption, is surface phenomenon?

Adsorption is surface phenomenon Explain.

Adsorption is a surface phenomenon Explain

Between absorption and adsorption, which one is surface phenomenon ?

Assertion : Solids in finely divided state act as good adsorbents. Reason : Adsorption is a surface phenomenon .

Amongst adsorption, absorption which is a surface phenomen and why ?

Explain the meaning of statement, "Adsorption is a surface phenomenon."