'Will you be able to trace the father of calves?'
In short, yes, you would be able to trace the father of calves.
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Answer:
Louis Pasteur devised a way to flask that allowed oxygen in, but prevented dust from entering. The broth did not show signs of life until he broke off the neck of the flask allowing dust, and therefore microbes, to enter.
Explanation:
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I think A and B. And maybe C?
Carbon Dioxide (CO2) Water (H2O) and Sunlight
Answer:
vAccording to one data set, the average American has has an ecological footprint over four times larger than the global average.