C. Increased genetic variation
The menstrual<span> cycle </span>occurs<span> due to the rise and fall of hormones</span>
The leaf needs the sun to grow and gain energy. the insect then eats the leaf and gets its nutrition and energy.
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<span>Answer: Smooth Endoplasmic Reticulum
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Breathing in air pollutants can irritate your airways. It may cause shortness of breath, coughing, wheezing, asthma episodes and chest pain. Overtime, exposure to air pollution puts you at risk for lung cancer, heart attack/strokes, etc. Some people are more at risks from others though
