Answer:
The lungs are separated by the mediastinum. - c.
Answer:
Metabolic wastes or excretements are substances left over from metabolic processes (such as cellular respiration) which cannot be used by the organism (they are surplus or toxic), and must therefore be excreted.
This is what i found out i hope this is a good enough answer!! :P
Answer:
It has a low density and opaque.
Explanation:
As it is opaque, the reading of the thermometer can be read accurately