<u>Smoking</u> causes respiratory disorders such as bronchitis, pneumonia and lung cancer.
<u>Explanation:</u>
Respiratory disorders such as bronchitis, pneumonia and lung cancers are caused by smoking tobacco, air pollution and by infection. Smoking is the predominant cause of this respiratory order it also raises the level of air pollution which becomes hazardous to all the living organisms.
Infection in the lungs which is identified as pus in air sacs and found as inflamed lungs is usually life threatening. Severe shortness of breathe called the bronchitis is due to airborne chemicals.
C. Survive long periods of dormacy
Answer:
Number 1. the flower; it has a reproductive function. They are the reproductive organs of the plant. They mediate sperm contained within pollen, to the ovules contained in the ovary.
Number 2. the leaf; their primary function is photosynthesis -manufacturing food for plants
Number 3. the stem; it's function is to provide support for leaves and flowers, they conduct water and nutrients from the roots and food in the form of glucose from the leaves to other plant parts.
Number 4. the roots; their function is to absorb water and minerals from the soil, anchor the plant in the soil and to store extra food for future use.
Explanation:
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Answer:
Fish have gills that allow them to “breathe” oxygen in the water. Water enters the mouth, passes over the gills, and exits the body through a special opening. Gills absorb oxygen from the water as it passes over them
Explanation:
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