Answer:
well you didnt give me a link to the story or text so i dont have any info to answer sry ;(
Explanation:
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.
Cell wall and Chloroplast
<span>A cell in the leaf of a corn plant contains more chloroplast which is use to absorb light compare to the cell found in the stem of a corn plant. When compared to the cell in the stem, the cell leaf synthesizes more sugar for it has more chlorophyll needed for photosynthesis.</span>
