Only the bases varies from one nucleotide to another.
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
The answer is D. That is what physics textbooks say.
Answer:
the earth will eventually crack amd form a new river and the clouds will precipitate and cause water for the stream of the river
At the end of the winter they are most numerous in fresh water. they will cover surface of aquatic plants or poles and wooden borders of ponds. If you like to study them you can scrape the brown growth with a flat piece of plastic. you can also use a sponge. for the free living (plankton) species fine mesh plankton net is very useful.
