What is humification ?

What are natural rubbers and what are synthetic rubbers? What is vulcanisation? How does it improve the characteristics of rubbers?

Read the given statements and select the correct option. Statement 1 : Decomposition is the physical and chemical breakdown of complex organic matter into simple inorganic substances. Statements 2: Humification is the process of formation of humus from detritus or organic remains.

What is schicophrenia? What are it's symptoms?

What is couple ? What is it' s moment ?

What is apomixis and what is its importance?