The answer is the muscular system
Chemical factors: This is due to internal stimuli. Changes in the blood such as decrease in O2, increase in CO2 and decrease in PH cause impulse in the carotid artery which stimulates the respiratory centers in the medulla and cause breathing.
Mechanical factors: also called external stimuli. Compression of the fetal chest during delivery forces small amount of lung fluid out of the lungs. This increase in pressure in the chest draws air into the lungs.
Answer:
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To test the saying, Megan has to use steps of scientific method.
The first thing that the Megan should do is to make a hypothesis that ''bees makes a fine honey from berry orchid.'' Then he has to do experiment by placing the apiaries in the berry orchids in order to find out his hypothesis. After sometime, Megan has to collect the data and draw the conclusion in the light of her observation in order to find out that the honey bees made honey or not so in this way the Megan used steps of scientific method in order to test their hypothesis.
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