Hello!
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>
<span>Hey There Welcome To Brainly ,
Natural springs are not a means of water erosion. Some types of water erosion include rain, streams, rivers, and ocean waves.</span>
Answer:
yes but it can also affect humans like tornadoes destroying homes?
Explanation:
The structure labeled as x is the
<h3><u>nucleus</u>. </h3>
<em>Hope</em><em> </em><em>this helps</em><em>.</em><em>.</em><em> </em><em>Good luck</em><em>!</em><em>!</em>
