A control group is different because it is not what is being tested. for example the control group would use sugar pills while the other group uses the pills being tested
Answer:
Explanation:
1)respiratory system
2)trachea, bronchi, bronchioles, alveoli, lungs, diaphragm
3)trachea
4)inhale oxygen and exhale carbon dioxide
5)gas exchange
The theory of evolution look it up and thats where you will get your anwser
Answer: D
Explanation:
I don't actually know why, but i just got i wrong on the quiz... :(
Mostly B because its making more of its self and considered asexual reproduction meaning it reproduces on its own
