Answer:
9. c
10. c
11. a
11.c
Explanation:
97% of the world's water resources are found in salt water.
3% are found in icecaps and glaciers
The Mississippi River watershed is the largest in America with an area of 3.2 million square kilometers. it is the fourth largest in the world. It covers about 40% of the continental landmass of the US
The mass number of an element is equivalent to the number of Protons and Neutrons in the element. For example Oxygen has eight protons and neutrons, therefore its mass number is 16. You could also calculate this by simply rounding the atomic weight of the element to the nearest whole number. Oxygen's atomic weight is 15.994, which as you can see, would be rounded to 16 :)
Answer:
The boundaries where the tectonic plates meet are the areas of the world with the most violent natural earthquake activity. When the plates grind against each other along plate boundaries, the rocks are under so much pressure that sometimes they heat up and fold, creating mountain ranges, hills and valleys.
