Biology, 14.01.2020 00:31 gizmo50245
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explain how the human circulatory system is adapted to:
• supply oxygen to the tissues
• remove waste products from tissues [6 marks]
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Biology, 22.06.2019 10:00
The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.
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Biology, 22.06.2019 11:00
Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.
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Biology, 22.06.2019 13:50
The law of states that traits are passed from parents to offspring independently of one another.. true or false
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Biology, 22.06.2019 16:00
Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.
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explain how the human circulatory system is adapted to:
• supply oxygen to...
explain how the human circulatory system is adapted to:
• supply oxygen to...
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