Answer:
a.they work together to allow gas exchange
Explanation:
the trachea helps transport air to the lungs, the lungs fill with air, finally the alveoli convert the oxygen to the bloodstream
<span>False is a statement to a person or group made by another person or group who knows it is not the whole truth, intentionally.</span>
Answer: it can change because...
Explanation: the tilt of the earths axis is a little over 25 degreas so when the earth is tilted twards the sun the day is longe and vise versa because of this the seasons are created
