Present tense should still be used even if the research you are speaking of aged. Example: “ Clidemia heterophylla and ... Passive voice also allows one to help move words to emphasize them. Passive ...
The word 'tense' comes from 'tempus', the Latin ... It is also common for essays to be written in the present tense. For example, if you were to write an essay about the poem Blessing by Imtiaz ...