The five sentences (labelled 1,2,3,4, and 5) given in this question, when properly sequenced, form a coherent paragraph. Decide on the proper order for the sentence and key in this sequence of five numbers as your answer.
1.Before plants can take life from atmosphere, nitrogen must undergo transformations similar to ones that food undergoes in our digestive machinery.
2. In its aerial form nitrogen is insoluble, unusable and is in need of transformation.
3. Lightning starts the series of chemical reactions that need to happen to nitrogen, ultimately helping it nourish our earth.
4. Nitrogen - an essential food for plants - is an abundant resource, with about 22 million tons of it floating over each square mile of earth.
5. One of the most dramatic examples in nature of ill wind that blows goodness is lightning.
To determine the correct sequence of sentences to form a coherent paragraph, let's analyze each sentence:
1. Sentence 5 introduces the concept of lightning as an event with positive outcomes, suggesting a starting point with "One of the most dramatic examples...".
2. Sentence 3 expands on sentence 5 by explaining the role of lightning in chemical reactions related to nitrogen.
3. Sentence 4 introduces nitrogen as a plentiful resource, following the impact of lightning.
4. Sentence 2 describes the state of nitrogen in the atmosphere, a logical continuation from the introduction.
5. Sentence 1 then explains the transformation nitrogen must undergo, aligning with the previous explanation.
Arranging these sentences results in the order 53421, forming a coherent paragraph:
Thus, the correct order is 53421.
When $10^{100}$ is divided by 7, the remainder is ?