The question was, before the white man came and cleared the forests in the eastern half of the country for fields, making room for the milkweed to grow, what was the population of monarch butterflies? What is being presented to us as a disaster may be simply a return to historic ranges.
Similar to the short video Discover had about accelerated evolution of cliff swallows in Nebraska. Some study started counting them and measuring dead ones on the side of I-80 after it was completed, and they found that they are developing shorter wingspans to be more nimble flyers and dodge traffic getting to their nests.
No mention was made of what effect the building of countless miles of safe nesting sites (the underside the bridges that carry the interstate 455 miles across Nebraska) had on the population to begin with.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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