The correct option is C.
The recovery process is used to remove refrigerant from an AC system in order to store it in an external container. The refrigerant has to be removed because it destroys ozone layer and cause global warming. It also has negative effects on the living organisms generally.<span />
This can be possible because we no longer need to use a large hose and spray water on the roads and let the dirty water drain away back into seas and rivers and create water pollution. However, this methods requires a large amount of labor and time.
Answer:
external
Explanation:
<em>Through the process of photosynthesis, plants use the sun's energy to make sugars to function. External means from an outside force, while internal means from within. Since the sun isn't inside a plant, they gather it from outside, thus it's external.</em>
These question makes no sense
sorry xx
