Изменение условий обитания одного вида, вызванные жизнедеятельностью другого вида проявляются в ... связях.

1)      The Russians usually jump in freezing water or snow after steam bath.

2)      The Russians usually welcome dear and important guests with a special loaf of bread and salt.

3)      The Russians usually cook much more food than necessary when they celebrate.

4)      The Russians like telling about their worries and problems.

5)      The Russians think that sitting on a suitcase before a trip is a good sign.