The DNA molecule is a double helix, shaped like a twisted ladder.
I would have to say probably d.
Answer:
I believe it is D. Please correct me if i am wrong.
Explanation:
Hope my answer helps. Have a great day.
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>
