There are exchanges that happen continuously in our bodies. One exchange is the gas exchange, or respiratory, system. This is the system where carbon dioxide is released from the lungs into the air, and oxygen is taken into the lungs from the air. This exchange happens in the air sacs of the lungs called the alveoli.
Hey there Lorin!
Long period comets come something called the OORT CLOUD.
Short period comets come from the kuiper belt.
-Steel jelly
Answer:
i think its atomic number
Explanation:
Answer:
ive done science already and i think its 2 if im wrong im sorry
