Respiratory system helps in breathing and it leads to exhalation of the gas carbon dioxide which is not required by the body. The integumentary system is the first line of defense and protects the body from invadig microbes, dust, and other harmful substances. The digestive system protects the body by enabling digestio of food and providing energy to sustain, further the toxic waste materials are also released during the process.
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The answer is C the enforcement clause
Answer:
Polar molecules occur when there is an electronegativity (a charge) difference between the bonded atoms. Nonpolar molecules offur when electrons are shapred between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.
Explanation:
Or basically, polar molecules occur with a charge, as nonpolar molecules do not. And yes, lipids are molecules.