What is the main idea presented in this passage? Ancestral Puebloans lived in the cliff dwellings (of Mesa Verde] for less than 100 years. By about... 1300, Mesa Verde was deserted. Several theories offer reasons for their migration. We know that the last quarter of the ... 1200s saw drought and crop failures, but these people had survived earlier droughts. Maybe after hundreds of years of (overuse), the land and its resources-soils, forests, and animals-were (used up). Perhaps there were social and political problems, and the people simply looked for new opportunities elsewhere.​

Which gold led israelis and palestinians into conflict

Ascientist successfully predicts the outcome of an experiment. you watch carefully and know he didn't cheat. the scientist's success shows that: a) the scientist knows absolute truth about this experiment; success is not possible unless you know the truthb) the scientist was just lucky; no one ever knows what's going on, so successful predictions require luckc) the scientist may know the truth, or at least know something that is close to the truth, or the scientist may have gotten lucky this time; you can't be absolutely sured) the scientist really was cheating, even though you didn't see the cheating; no one can get things right, except by cheatinge) the scientist spent the night at a particular hotel chain and go a free breakfast, giving the scientist the ability to do amazing things

Xplain one benefit and one risk of making voting mandatory in the united states.