Match each eon with the appropriate characteristic or event. 1. Hadean eon toxic atmosphere; first bacteria 2. Archean eon buildup of oxygen; first eukaryotes 3. Proterozoic eon formation of the solar system 4. Phanerozoic eon current eon

The nineteenth century was an era of great inventions in the united states. look at the list of inventions below and order them from most to least important (in your opinion). then explain why you ranked the top three inventions as most important. 1834: refrigerator invented by jacob perkins 1837: morse code invented by samuel morse 1853: elevator invented by elisha graves otis 1873: typewriter invented by christopher latham sholes 1876: telephone invented by alexander graham bell 1877: gramophone invented by thomas edison 1879: light bulb invented by thomas edison 1886: dishwasher invented by josephine cochran

How does a comet change when it comes close to the sun

Conflict resolution can be difficult. which of these is the best example of how the us congress resolves conflict instead of always using a majority vote?