Answer:
DNA
Explanation:
RNA is not a double helix
Uracil is on the RNA, this is a picture or DNA. Uracil is just one of the nucleic bases
This is not a monomer; it's actually a polymer
It is DNA because it is a double helix structure held together by the four nucleic bases.
It can be observed and tested
<span>There are three types of seismic waves. These are classified on the basis of their penetration in the earth's surface and their arrival to seismographs. First are primary waves, which arrive first and penetrate the deepest. Then are the secondary waves, which penetrate less and arrive after primary waves. Finally are the surface waves, which do not penetrate the earth's surface and arrive the latest.</span>
Answer:
To figure out what will and will not hurt the environment
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