Third_____Green house effect Animals “ Simulation models and some statistical studies suggested that there might be a threshold in proportion of suitable habitat in landscape below which populations decrease very quickly. Distinguishing relative effects of habitat fragmentation and habitat loss on population extinction threshold has important implication for conservation, but empirical evidences are still of scarce in testing the effect of fragmentation on the population extinction threshold” （ Acta Ecologica Sinica ). The Green house effect always let animals get different kinds of sick and problem, but animals also is one main kind of reason let green house effect happen. The Green house effect is happening right now and when the animals face to those kinds of problems they have many kinds of situation, suck as "Because edge effect, area effect and isolation effect can influence ecological relatio...