When comparing the brightness of stars, it is
necessary to know the distance to each star.
vo...
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Under which of the following circumstances would natural selection not operate on an organism
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There are two tomato plantlets one of them is kept in an oxygen chamber with a light source and another is kept in sunlight. both of them are watered regularly what will be the observation after two weeks
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If this person had son,what,sex chromosome did they give their son? a.x b.y c.neither d.we need more information to know for sure
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