Fertilisation And Implantation

What is the purpose of applying mulch around fruit trees?

Given below are two statements:
Statement I: Desertification is the improvement of areas of deserts that have very little cultivation, so as to make the desert soil fertile.
Statement II: Improper land use practices, over grazing, abusive land use, factory pollution, urbanization, etc are factors that are responsible for climate change.
In the light of the above statements, choose the most appropriate answer from the options given below

Which of the following is NOT an indicator of soil fertility and productivity

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The response of plants to elevated concentrations of is known as carbon-dioxide fertilization effect.
Reason R: Under elevated concentrations of atmospheric , plants are able to increase their rate of photosynthesis.
In the light of above statements, choose the correct answer from the options given below

फलदार वृक्षों के आस-पास मेड़ मल्च के प्रयोग करने का क्या प्रयोजन है?