I believe the answer to your question is the cortex
Answer:
c..... mRNA is made from DNA
The systems work together to create homeostasis in the body
The answer is : Thermosphere. At this point the homosphere (troposphere, stratosphere and mesosphere) ends at about 80 km from the surface, gas molecules<span> are here</span>bombarded<span> by X-</span>rays from the sun<span> and subsequently form the ionosphere.
Hope this helps! :)</span>