Considere as seguintes frases relativas à mistura de substâncias. I. Sempre serão misturas homogêneas II. Sendo heterogêneas pode-se usar métodos mecânicos para separa-las III. As misturas são sistemas polifásicos. Das três frases somente

the answer is false because not all countries have geysers under their crust. for example, iceland uses geothermal energy because it is available every in their country.  

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.