Explain why the greenhouse effect leads to increased average global temperatures ​

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?