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How to build a simple workbench<br>Start with tools that are needed. You will need a drill, a drill and screw bit set, a saw and a carpenters square to make sure that all your cuts are not crooked, and something to haul materials to and from the lumberyard. Buy the thickest plywood you can afford.
Hypothesis: You need to buy all these tools to build the bench.
It's impossible to say
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The world's oldest known child has been discovered in East Africa in an area known appropriately as the Cradle of Humanity. The 3.3-million-year-old fossilized toddler was uncovered in north Ethiopia's badlands along the Great Rift Valley (map of Ethiopia). The skeleton, belonging to the primitive human species Australopithecus afarensis, is remarkable for its age and completeness, even for a region spectacularly rich in fossils of our ancient ancestors, experts say. The new find may even trump the superstar fossil of the same species: "Lucy," a 3.2-million-year-old adult female discovered nearby in 1974 that reshaped theories of human evolution. (Related: "Fossil Find Is Missing Link in Human Evolution, Scientists Say" [April 2006].) .
Hypothesis: Scientists are in a race to find the oldest fossil.
It's impossible to say
Context:
A little of that yellow corn would make a good breakfast .<br>When he reached the cornfield , Blacky perched on top of a shock of corn , for it already had been cut and put in shocks in readiness to be carted up to Farmer Brown 's barn .<br>For a few minutes he sat there silent and motionless , but all the time his sharp eyes were making sure that no enemy was hiding behind one of those brown shocks .
Hypothesis: For a few hours he sat there silent and motionless
No