I. Down feathers â soft and fluffy, trap air for insulation. II. Contour feathers â give shape and color. III. Flight feathers â on wings and tail flying
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25
How do fish breath?
Fish breathe by drawing water into their mouth, passing it over the gill arches protected by the operculum, where oxygen is absorbed.
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15
What is the role of the placenta in placental mammals?
provides nutrients and oxygen to the developing fetus and removes waste products.
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20
During which stage of meiosis does crossing over occur, and why is it important?
Crossing over happens during prophase I of meiosis, and it is important because it creates genetic variation by exchanging DNA between chromosomes.
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20
How many daughter cells are produced at the end of mitosis, and are they genetically identical or different?
two daughter cells are produced, and they are genetically identical
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thief
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seesaw
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shark
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15
Name fins of the fish.
Dorsal fin (1 or 2) Tail (caudal) fin (1) Pectoral fins (2) Pelvic fins (2) Anal fin (1)
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fairy
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baam
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15
Name 5 species of sharks.
white, hammerhead,tiger,whale, basking shark
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monster
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fairy
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20
Name cold blooded (Ectotherms) vertebrates (classes)