From the deepest to most superficial: pia mater, arahnoid, dura mater
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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>
Answer:
Both require a vacuum and a compound microscope has greater magnification ability than a simple microscope.
Explanation:
Coniferous trees because they can stay green all year long. Taiga biome are usually cold and coniferous trees never lose it’s color or leaves.
