Not sure that this is the entire question...?
The sun is the ultimate source of energy because without the sun producers could not produce food for themselves which would then leave no food for consumers.
People tend not to believe/accept things they can't see proof of with their own eyes or things that lack scientific evidence.
Continental drift is something that spans hundreds of thousands of years. People don't live that long to be able to see the position of the continents and land changing over time. Also when Wegener proposed this theory, he couldn't explain how continental drift occurred, so lacking scientific evidence, many people did not believe him.<span />
42-rationale: each unit of packed rbcs contains 250 ml. each unit is to infuse over 1 hour (60 minutes).\r\nuse the following equation:\r\n250 ml/60 minutes = 4.16 ml.\r\nmultiply by the drip factor:\r\n4.16 ml 10 gtt = 41.6 gtt/minute (42