Personification. It makes an object do things a person would. Making it a person. Personification.
The edges of the continents are in a constant state of change caused by the ocean currents. Those currents can bring material with them, making the line more "smooth" and adding land to it, forming the so -called barrier beaches, or the sea can cause the land to fall into the water.
this change of edges over time and tectonic movement mean that the shape of the continents changes all the time: so the continents changed since the time of the split.
Answer: To warn you.
In this excerpt, it is clear that King Arthur knows that Queen Guinevere has been unfaithful to him. He makes this clear when he states <em>"I send you three grey cats with gifts, Queen Guinevere, To warn you, sleekly, silently."</em> This sentence indicates that the present has been sent not as a kindness, but as a warning. These lines change the tone of the poem to one that is threatening.
