In this passage from Henry David Thoreau's Walden, the narrator uses strong sensory language to create clear images - to, in essence, paint a clear picture in words - of the forest and the hills. The narrator is able, through the use of such strong sensory language and imagery to give the read a clear image of what he is describing, which, in turns, makes the scene he is describing come to life.
Interdisciplinary teaching helps students make sense of scientific issues and problems that are presented in real-life contexts. Interdisciplinary teaching aids them in coping with the issues by using skills and knowledge associated with any of the relevant disciplines.
A

is used to show a large pause or interruption in thought within a sentence.
A comma does not make sense because all a comma does is separate elements in a sentence; a colon separates thoughts and/or enumerations.
Thus, dash was the only reasonable answer.
You're welcome.
There are two neap tides per month because:
The moon and
sun are at a 90-degree angle to Earth twice a month.
Neap tides are also known as moderate tides. The lunar tide is partially cancelled when the moon and the
sun are at a 90-degree angle to Earth, or being at right angles. This event happens twice a month thus creating neap tides twice a month also.