1. The Northern Hemisphere experiences winter during the months of December, January, and February.
北半球は12月、1月、2月に冬を経験します。

2. Many migratory birds travel to the Northern Hemisphere during the summer months.
多くの渡り鳥が夏に北半球に移動します。

3. Countries in the Northern Hemisphere often have colder climates compared to those in the Southern Hemisphere.
北半球の国々は、南半球の国々と比べて、よく寒い気候を持っています。

4. The Arctic Circle is located in the Northern Hemisphere and experiences extreme cold temperatures.
北極圏は北半球に位置し、極端な寒さを経験します。

5. The Northern Hemisphere is home to many different ecosystems, from tundra to temperate forests.
北半球には、ツンドラから温帯林までさまざまな生態系があります。

6. The longest day of the year occurs in the Northern Hemisphere during the summer solstice.
1年で最も長い日は、北半球で夏至に起こります。