homework

Have you ever seen an area in a forest where all the trees were cut down?If so,you might wonder about the effects of cutting down all those trees.You might wonder how if affected the animals and people living in that area and how it affected the land itself.That is exactly what scientists Bormann and Likens(Core Case Study)thought about when they designed their experiment.

你見過一個地區在森林中，所有的樹木被砍掉？如果是這樣，您可能想知道砍掉所有樹所造成的影響.你可能不知道，如果影響到動物和人生活方面，以及影響的土地本身.那正是科學家Bormann和Likens（Core Case Study）想過當他們設計的實驗。