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The present day continent of north america was part of 200 million years ago. a. laurasiab. gondwanaland c. neither laurasia nor gondwanaland
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Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.
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Biology, 22.06.2019 04:00
In the water cycle , when does water undergo a chemical change
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Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell
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The present day continent of north america was part of 200 million years ago. a. laurasiab. gondwana...
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