Answer:
The diversity and variations between ecosystems that ultimately links to human existence
Explanation:
Answer:
DNA is double-stranded, while RNA is single-stranded. RNA contains ribose as a sugar, while DNA contains deoxyribose. Also, three of the nitrogenous bases are the same in the two types (adenine, cytosine, and guanine), but DNA contains thymine while RNA contains uracil.
A variation is a reference to the differences or deviations, such as the structure and form, as for crossing over is the exchange of genetic material between the non-sister chromatids of the homologous chromosomes during meiosis.
Blueberry: 1st Trophic Level
Rabbit: 2nd Trophic Level
Snake: 3rd Trophic Level
Cat: 4th Trophic Level
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