A) A mixture because they can be taken apart without changing the physical form
Answer:
you can see the head(start) of the train
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
Answer:
answer:
9 Months ....
Explanation:
...... That's actually a really long time
No it is D. Binary Fission.
