These new tools reveal that different descendants of a common ancestor do indeed usually go through embryonic stages that resemble each other and their common ancestor The processes that guide ...

It is also common for essays to be written in the present ... of the text when they are no longer alive, you can use the past tense. For example: 'Dickens was interested in those characters ...

For example, the tense may change between the methods section and the discussion section. The abstract is usually in the past tense due to it showing what has already been studied. Example: “This ...

While revising a novel, fantasy writer Ellie Blackwood discovered the origins behind five common English words that had ...