The function of chemical substances such as histamine and leukotrienes would be to stimulate inflammation. Leukotrienes is an example of eicosanoids which play a key role in the pathogenesis of inflammation. They are synthesized in the leucocytes from arachidonic acid via the actions of 5-lipoxygenase. The release of histamine serves as an important part of the body's immune response; when the body comes into contact with an allergen, such as pollen or animal dander, histamine is released by the body to the site of contact and triggers inflammation.
When Earth formed<span> 4.6 billion years ago from a hot mix of gases and solids, it had almost no </span>atmosphere<span>. The surface was molten. As </span>Earth<span> cooled, an </span>atmosphere formed<span> mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's </span>atmosphere<span>. So it would be Outgassing. Hope that helped :)</span>
Answer:
true
Explanation:
if they are similar, the dna is going to be similar
if they are different, the dna is going to be different