There are many techniques to do so: introduce a fascinating and unexpected fact or statistic, a quote from a famous person or something else — anything that works in your particular case.
Although there may be writing circumstances that mandate its usage, sentence structure and author voice are stronger if prepositions are not used in beginning sentences.
These could be influential people, historical background, an important event, geographical information, or anything relevant to your subject.
A paper model of a DNA molecule might be composed of pieces cut from a template that can be fitted together and taped to form the double helix.
Unlike the topic of your essay, a thesis statement is a short one or two sentences explanation of what your paper is about and what is your position on the subject.
The main thing you should do is preserve a specific structure of the ten-page paper. Pay attention to grammar, syntax, logic, and consistency of writing.
Avoid beginning sentences or paragraphs with a preposition. Solution: Rearrange sentence structure or combine with adjacent sentences.