halledoll2002
27.06.2019 •
Biology
This picture shows the united states arctic national wildlife refuge, a large portion of alaska that is protected from human activities that would affect living things in the area as well as nonliving resources that support living things. even though oil and other resources in the area could be collected and sold by humans to increase american wealth, construction is prohibited in the area. the most complex level of organizational hierarchy in the arctic national wildlife refuge that is preserved is the population of brown bears in the area. every species of fish in the area. every ecosystem in the area. the biosphere that includes alaskan life.
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Ответ:
DNA is just one type of nucleic acid. Some other types are RNA, mRNA, and tRNA. All of these "NAs" work together to help cells replicate and build proteins. ... RNA stands for ribonucleic acid.