What does “soil health is a linchpin"
mean as it is used in paragraph 19?

Dogs make wonderful pets because they us stay happy and healthy. the topic sentence is "dogs make wonderful pets." , is this correct? i keep doubting myself.

Imagine you are reading a story about a character named dray. dray is captain of the basketball team and practices for hours after school in order to achieve his goals of playing in the nba. one day, dray decides that he hates basketball. he quits the team and takes up knitting instead. what is the introduction of this new plot point is an example of a. an anticlimaxb. a conclusionc. a contrivanced. a climax

If you receive an email then this doesn’t apply what does this mean?