For the first question, it is cos48=2/3
Answer:
All of the above
Explanation:
this is because a nation's boarder can be seperated by a body of water,mountain ranges and lines of latitude and longitude.
Alluvial fan could be the answer. Alluvial fans are cone shaped deposits of sedimentary particles. The particles can be sand. silt, gravel or clay. These land-forms are formed at the mouth of canyons or in valleys where ephemeral streams can occasionally transport material to the mouth of the canyons. An ephemeral stream is one that is created after a shower of rain or other form of precipitation; they are not permanent streams. <span />
I think it's false. I may be wrong. Sorry if i am