The phrase "it is apparently necessary" is correct and commonly used in written English.
Example: It is apparently necessary to complete the application process before the deadline in order to be considered for the job.
The function of vitamin A remains to be clarified, but it is apparently necessary for proliferation of cartilage and bone growth.
"It is apparently necessary for me to state once again — not what kind of church I believe in, for that should be important only to me, but what kind of America I believe in," he said that day.
To portray a more representative picture of EFL testing in China, it is apparently necessary to investigate the testing practices of more examination boards operating at different levels.
Thus, it is apparently necessary to develop effective health communication strategies that aim to raise community-level awareness about the positive relationship between breast cancer prevention and physical activity.
As for Simenon's compulsive sexual activity, it was apparently necessary to overcome his mother's coldness to him.
There would always be functional justifications for what often seem like purely visual features; in the case of the Pompidou Centre, it was apparently necessary to have the lifts, tanks, pipes and other services outside of the building to create the space for large, flexible rooms that could hold wide varieties of artworks.
But as yet another brace of TV documentaries is screened featuring intrepid Englishmen trawling Scotland and prodding its inhabitants in search of referendum data, it becomes difficult not to feel like a lab rat – a common enough species about whose neurological functions more information is apparently necessary, to understand why it might want to alter the boundaries of its natural habitat.
Well, a little hype is apparently necessary to justify an hourlong report on the networks these days, and this one offers interesting insights and asides on how uncivilly the abortion war is being fought in this voting season.
The new fee for in-person or over-the-telephone phone number change is apparently necessary to cover labor costs, both for Sprint's retail workers and call-center employees.
