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Where water is moving downwards due to the force of gravity this action is faster in the upper course of the river due to steep hills in the uplands where waterfalls are most common. If the underlying roc...

In the upper course of the river the river is beginning so is narrow, shallow and low energy. This low energy causes sediment to not move and therefore pebbles and rocks aren't moved by the waters action....

Viruses are parasitic organisms that cannot survive outside a living host. They are considered to be non-living, however this still remains debatable amongst virologists. They infect their host and utilis...

f(g(x))=2(cx+5)+c

fg(x)=2cx+10+c

2cx=6x

2c=6

c=3

10+c=d

d=13

Multiply whole equation by 2

6y + 4x = 12y - x

Take 6y from both sides

4x = 6y - x

Add x to both sides

5x = 6y

divid both sides by 5

x = 6/5(y)