16. How is the respiratory
system of insects (with its
independence between
circulation and respiration)
related to the motor agility of
some species of this arthropod
class?

Gap-fill exercise

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Even having low and low pressure
system, since it a lacunar
(open) system, insects
perform fast and exhaustive
with their muscle , like
wing beating. is possible because
these animals the is
independent from open circulation.
Gas is done with speed
and efficiency the tracheal system
puts cells in contact with air.
can then work and hard.