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Answer:

Across
1One of the oldest sciences. The study of celestial objects and phenomena that originate outside the earths _____.
4For a hypothesis to be considered scientific it must be testable-it must, in _____, be capable of being proven wrong.
8Is the study of living _____
Down
2Personal interpretation & creative _____. - They ask "Who?"
3A unit of absolute temperature, one kelvin degree is equal to one celsius degree
5Measures mass, base unit is kilogram
6A phenomenon about which competent observers can agree.
7Unit of volume.
 
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