<span>A higher developed organism will have a higher degree of specialization.</span>
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2.Allergens cause an allergic reaction. T<span>heir immune system produces antibodies, that are triggered depending on what substance it is.
3.Asthma is classified as an allergy because substances may trigger asthma and sometimes they do not, just like how certain substances cause the allergies.
Hope this helped!</span>
A. Metabolism this is the process of taking food and making it energy
