D. A duck flies to another pond.
The above sentence is an example of emigration. Emigration refers to moving from one area to another for a long or permanent period. In this instance, a duck is leaving the pond it originally resided in (along a population other ducks) in order to reside in another pond. Therefore, it can be said that the duck "emigrated".
Answer:
Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through. Extensive blood supply - ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.
The answer is A
The air circulated in a clockwise direction in the northern hemisphere
<span>During protein synthesis, the peptide bond between amino acids is formed by the process of condensation. Condensation is a reaction when two smaller molecules (in this case amino acids) make a larger molecule(protein) and water as a side product.</span>
