Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.
Answer:
According to the characteristics given and what the image shows, the species to which the frog corresponds is Bufo boreas.
Explanation:
Options for this question are:
- <em>Bufo marinus
.</em>
- <em> Litoria caerulea
.</em>
- <em>
</em><em>Bufo boreas.
</em>
- <em>
Acris crepitans.</em>
Bufo boreas is a species belonging to the family Bufonidae, very common in North America, constituting an anuro amphibian.
The appearance of B. boreas is that of a thickened and irregular skin, due to multiple warts found on its surface. Additionally it has a stripe or line in its dorsal region, which extends from the head to the tail.
These characteristics, together with the description given, make it possible to establish that B. boreas is the species that can be observed in the picture (see image).
Hey
Correct answer: Scavenger
Why? Because a scavenger is an animal that eats dead animals. A vulture is a example of one
have a good day
The process of RNA editing is the alteration of the sequence of nucleotides in the RNA after it has been transcribed from DNA, but before it is translated into a protein. RNA editing occurs by two distinct mechanisms:<em><u /><u>Substitution</u> <u>editing </u></em>and <u><em>Insertion/</em></u><em></em><u><em>deletion</em></u><em> <u>editing</u></em>.
<u><em>Substitution editing</em></u> is the chemical alteration of individual nucleotides. These alterations are catalyzed by enzymes that recognize a specific target sequence of nucleotides:
*Cytidine Deaminases that convert a C in the RNA to uracil.
*<em />adenosine deaminases that convert an A to inosine,which the ribosome translates as a G.<span>Thus a CAG codon</span><span> (for Gln) can be converted to a CGG codon (for Arg).
<em><u>*Insertion/deletion editing</u></em><em><u /></em><u /> is the insertion or deletion of nucleotides in an RNA.
These alterations are mediated by guide RNA molecules that base-pair as best they can with the RNA to be edited and serve as a template for the addition( or removal) in the target.</span>
Its only 5 points, not 88