1. Which article is used in front of Irish Sea? 2. Which article is used in front of North Channel and St. Georges

1. The definite article «the» is used in front of Irish Sea. The Irish Sea is a specific body of water located between Great Britain and Ireland. «The» is used to indicate that we are referring to a particular sea.

2. The definite article «the» is used in front of North Channel and St. Georges Channel. Both North Channel and St. Georges Channel are specific channels that separate different regions. «The» is used to indicate that we are referring to these particular channels.

3. The indefinite article «a» is used in front of Carrantuohill. Carrantuohill is a specific mountain in Ireland. However, since it is just one of many mountains, we use «a» to indicate that it is not a unique or specific mountain.

4. The definite article «the» is used in front of Shannon. Shannon is a specific river in Ireland. «The» is used to indicate that we are referring to this particular river.

5. To determine the number of small islands, we need more information about the context of the question. Could you please provide more details or specify which islands you are referring to?