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algol13
3 years ago
13

How did life on earth become so diverse?

Biology
1 answer:
Snezhnost [94]3 years ago
5 0

Answer:

"Through the Tertiary period (from 65 Ma) the Earth's climate became cooler with frequent oscillations that increased in amplitude and led to a series of major ice ages in the Quaternary. Glacial advances and retreats over the Pleistocene resulted in global cycles of contraction, expansion and fragmentation of species ranges resulting in species extinctions, population bottlenecks and differentiation."

Explanation:

(Did offline will rewrite in my own words if you would like :)

Hope this helps

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The genetic code was originally deciphered, in part, by experiments in which synthetic polynucleotides with repeating sequences
AveGali [126]

Answer: a peptide containing alternating arginines and alanines.

Explanation:

As the mRNA has a repeating unit of CGCG.

Now if we extend the units with more CG (CGCGCGCGCGCG) the pairing will be as CGC-GCG-CGC-GCG. and if we see the amino acids coded by these codons are arginine for CGC and alanine for GCG.

As this synthetic mRNA doesn't require any initiation codon (AUG) thus the polypeptide will not have methionine, which is the first amino acid in every polypeptide coded by the initiation codon.

Thus, the synthetic mRNA will code for peptide having alternating arginines and alanines amino acids.

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3 years ago
What is the best definition of the term “biological diversity”?
Gala2k [10]
"Biological diversity<span>" means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part: this includes diversity within species, between species and of ecosystems.</span>
7 0
4 years ago
Which characteristic is common in young rivers?
zhenek [66]
De answer is A!!!!!!!!!!!!!!!!!!!!!!!!!!!!


hope it helps!!!!!!!!!!!!!!!!!



a is right!!!!!!!!!!!!!
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3 years ago
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balu736 [363]
Nitrogen is a growth-limiting nutrient because cells need it to manufacture : Proteins and nucleotides
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D. He has an aerator that pumps bubbles into the tank
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