What is the hardest known mineral

What a backup plan that you have created in a event you encounter a situation

After you present a proposal, the committee starts asking you questions, some beyond the strict focus of your proposal. they ask questions about implications in other fields and knowledge about other fields. you are asked to redo your proposal. what is most likely missing? breadth of material depth of material clarity of material details of material

Which excel file extension stores automated steps for repetitive tasks?