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Novosadov [1.4K]
3 years ago
6

Explain why the respiratory surface has to be thin​

Biology
1 answer:
Mrrafil [7]3 years ago
5 0
To facilitate that exchange of oxygen and CO2 molecules.
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However, when the proteins formed by the genes have their amino acids sequenced, there is no difference observed between the two
Musya8 [376]

Answer:

The correct answer is: Variation in nucleotide sequences are located in those regions of the gene which do not affect the sequence of the protein due to genetic code degeneracy.

Explanation:

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8 0
3 years ago
4.   Which aquatic ecosystem typically forms along coastlines where fresh water and salt water meet, leading to varying degrees
lyudmila [28]
I would say estuary, because that's where a fresh water river and an ocean meet, and that leads to a transition between salt to fresh water.
8 0
3 years ago
Read 2 more answers
What was most likely not present in the creating of amino acids
Bumek [7]
Hydrogen  
I hope this helps you!
4 0
3 years ago
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