The two diagrams display the location and design 
for
 a wave-energy machine. The whole process of generation of electricity from Change preposition
of
water
 has been shown.
Both the diagrams clearly depict the electricity generation process with Use synonyms
one
 showing the direction of Use synonyms
Use synonyms
flow
 of Correct article usage
the flow
water
 and Use synonyms
air
, and the other Use synonyms
one
 showing the two different kinds of wave-energy machines, Use synonyms
that is
 the small waves- low output and large waves- high output.
In the first figure, we can easily see the Linking Words
flow
 of Use synonyms
water
 and Use synonyms
air
. How the Use synonyms
water
 through waves enters the machine which in turn produces an Use synonyms
air
 Use synonyms
flow
 to rotate the turbines. There is an inlet for Use synonyms
Use synonyms
flow
 of Add an article
the flow
air
 from the top of the machine as well which Use synonyms
also
 helps in the rotation of the turbine. 
In the Linking Words
second
 figure, the two different kinds of machines have been displayed with their locations. The Linking Words
one
 at a higher altitude receives less amount of Use synonyms
water
 Use synonyms
hence
 Linking Words
produces
 a lower output and Wrong verb form
producing
also
 Linking Words
has
 a lower installation cost. Wrong verb form
having
While
 the other Linking Words
one
 receives more amount of Use synonyms
water
 Use synonyms
being 
at a lower altitude, Unnecessary verb
apply
therefore
 Linking Words
produces
 a greater amount of electricity but costs more for installation.Wrong verb form
producing