58.504 Изгледи
Populations need a couple of basic things to survive – food and a place to live. When two or more populations of living things are crowded into a small area, there is competition for food and space. A population of birds and a population of squirrels compete for seed and bread crumbs in a park. Competition is a natural part of life, but problems can arise if populations get out of balance.
Първа ефирна дата : Sep 10, 1993
Дата на последния ефир : Jun 20, 1998
Епизод : 100 Епизод
Сезон : 5 Сезон
Времетраене: 26 минути
Студио: PBS
Страна: United States of America
