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>
In bundles in a ring is how a vascular tissue is arranged in dicot stems.
Your answer is A.
It is rare for soft tissue to become a fossil because the soft parts can be eaten by other animals. Hope this helps!
Answer
True
Explanation:
The temperature in the bathypelagic zone, unlike that of the mesopelagic zone, is constant.
Answer:
The gravitational pull of the moon as it orbits earth
