The changing of the composition of rocks by heat pressure or other natural agency.
I paraphrased from a google search :
https://www.google.com/search?q=metamorphism&rlz=1C1GCEU_en___US848&oq=metamorphism&aqs=chrome..69i57j69i61j0l4.3674j0j7&sourceid=chrome&ie=UTF-8
The tilt of the Earth on its axis is what causes the seasons.
The sum of vectors is the value given when two or more vectors are added together, in what is known as a vector addition.
Hopefully, this helps.
A glacier is a large persistent body of ice. A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by water vapor phase (steam). They both depend on water
