Sedientary Rocks Crossword

What is a word for something that has little specks?
What is something rough that naturally grows on Earth?
What do humans breathe in, inorder to survive?
What is a word for something that is a natural occurring material?
What's a type of rock that is often composed of skeletal fragments?
What are oceans, lakes, rivers, and rain made up of?
What sedimentary rock is a brownish, black colour?
What is a hill of loose sand called?
How do sedimentary rocks form?
What is the other type of rock change, besides physical?
What is the other type of rock change, besides chemical?
What is the name of a solid chemical compound that occurs naturally in pure form?
What's a more complex word for 'change'.
What is something that can blow tree branches down?
What is something that is made of finely divided rock and mineral particles?