関武夫さんという自然を愛している方が生前持っていた森を、ご遺族の方が（財）埼玉県生態系保護協会に寄付したんですね。 Intuitively, The natural selection n is definitely the widespread house of all sets that have n features. So, It appears natural to define n being an equivalence class underneath the relation "might be created in a single to 1 correspondence". There are actually, of cours... https://kutumbhvardhakcombo.blogspot.com/