Ateacher who wants students to elaborate on the material they are studying would be well advised to

They will be advised to ask higher level questions that would be of help in determining whether his or her students understands the material that they are understanding. Interacting with them in a way of asking questions will help the teacher understand if the students has absorbed the information in their book and if he or she needs to clarify more things regarding about the topic.

chemical substances supplied to the crops to increase their productivity are called fertilizers.

Spelling mistake not fertilisers it is

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