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Home Q & A Board Biology-Related Homework Help General Biology
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LesleyCher LesleyCher
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6 years ago
Blood in arteries
  1.always travels away from the heart.
  2.travels away from the heart only if it is oxygen-rich.
  3.always travels toward the heart.
  4.travels from the lungs.
  5.is always oxygen-rich.

Question 2

Select the correct sequence of animal developmental events.
  a. fertilization  cleavage  gastrula  blastula
  b. fertilization  cleavage  blastula  gastrula
  c. fertilization  blastula  cleavage  gastrula
  d. fertilization  gastrula  blastula  cleavage
  e. fertilization  blastula  gastrula  cleavage
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merana.potrosmerana.potros
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6 years ago
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LesleyCher Author
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6 years ago
this is exactly what I needed
lierac00
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Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
Kstan109
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2 hours ago
Thanks for your help!!
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