<span>Foreshadowing is the answer</span>
Pre-writing helps you decide how to organize your writing because it allows you to develop clear reasoning and also suggests ways in which the different ideas might be logically related, which can help you get a sense of how the essay could eventually be organized.
The second one does because snow is singular
Always allow MORE TIME THAN YOU THINK YOU WILL NEED to complete a writing project.
Writing projects differ in magnitude; there are some you can complete within a day while some such as dissertations may take as much as three months to complete. Completing a writing project successfully requires planning and hard work. One should never be tempted to be over confident about any writing project. It is better to start the project early and finish on time than to be stranded and not be able to submit when the time is due. Wisdom demands that one gives more time than one thinks is necessary to a writing project in order to allow for any unforeseen happening and in order to present an excellent work.