Hi the answer to your question would be the signals may be transmitted by Integrins.
Hope this helps.
C. Amino Acids.
Proteins consist of strands of amino acids, which is produced in the ribosomes of the cell.
Answer:
Krill
Explanation:
Based on the information provided within the question it can be said that the the Crabeater Seal's main source of food are Krill. These are a type of shrimp that can be found in cold water such as Antarctica. Despite the misleading name Crabeater Seal' do not eat crabs seeing as since the are no crabs in Antartica.
The third level, secondary consumers.