Answer:
It is B
Explanation:
I was able to find my school notes and double-check. I hope you have a nice day!
Answer: Surface materials breaks down into smaller pieces.
Explanation:
Erosion is the geological process in which the topmost layer of the soil is worn away and transported by natural forces such as wind or water. A process which resembles erosion is weathering, which lead to breaking down or dissolution of rocks, but does not involve movement of the rock or soil materials.
After erosion the layers at the top of the soil are also broken down to smaller bits by factors such as water and winds.
Answer:
selenium, fluorine and neon
Explanation:
the less valence electrons an element has, the more reactive.
selenium has 6 valence electrons
fluorine has 7 valence electrons
neon has 8 valence electrons
So, it is ordered from the least number of valence electrons to the most
We know that 
, where 
is density, 
is mass, and 
is volume.
Substitute in the values we know and solve:
