neveahnjenga46 neveahnjenga46

03-01-2021
Biology

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state 4 characteristics of gaseous exchange or respiratory surfaces

Respuesta :

jirehd1103 jirehd1103

03-01-2021

Answer:

. really big surface area.

.thin walls

.a lot of tiny blood vessels

.the transfer of oxygen from the outside air to the blood flowing through the lungs

Explanation:

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