Answer: B
Explanation: Multiple different combinations of bases (A, G, C, T) can code for the same amino acid. This means that there are more possible combinations of the bases than there are amino acids. There are 20 amino acids and the four bases can have up to 64 different codon combinations.
Answer:Option A
Explanation: The snail breaths in the O2 which will then exhale CO2, therefore the plant will take that and process the CO2 back into O2.
The answer to the first question is mucous membranes and skin
The answer to the second question is All of the above
Hope this helps! Good luck ;)
Organ system is the most complex in organization