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A soft tissue inside the bone that produces blood cells.
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Bone marrow
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The lobes of the brain that receive signals from the receptors in the nose.
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Olfactory Lobes
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The lobes of the brain that integrate sensory information and coordinate the creature's response to that information.
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Cerebrum
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The lobe that controls involuntary actions and refines muscle movement.
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Cerebellum
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The lobes of the brain that receive signals from the receptors in the eyes.
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Optic lobes
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The process by which the male places sperm inside the female's body, where eggs are fertilized.
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Internal fertilization
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The process by which the female lays the eggs and the male fertilizes them once they are outside the female.
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External Fertilization
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Lacking an internal mechanism for regulating body heat.
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Ectothermic
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What do sea squirts, lampreys, and amphibians have in common?
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They all go through metamorphasis, from larva to adult
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What is the difference between cartilage and bone?
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Cartilage is more flexible and weaker than bone.
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You see a blood vessel from a creature. you have no idea what creature and you have no idea where it came from. you do notice, however, that the blood vessel wall is very thin. what kind of blood vessel is this?
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A capillary
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What do red blood cells do?
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Carry oxygen in the blood.
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What protein gives red blood cells their color?
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Hemoglobin
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