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chapter 3 ex fish

1 down ectotherm And animal whose body dose not produce much internal heat
endotherm An animal whose body controls and regulates its temperature by controlling the internal heat it produces
chordate The phylum whose members have a notochord,a nerve cord,and slits in their threat area at some point in their lives
notochord A flexible rod that supports a chordate's back
cartilage A flexible,strong and tissue that is softer than bone
vertebra The bones that make up the backbone
2 down fish An ectothermic vertebrate that lives in the water and has fins
swim bladder Ann internal gas-filled organ that helps a boney fish stabilize its body at different water depths
buoyant force The force that water exerts upwardon any underwater object
3 down atrium An upper chamber of the heart
habitat The specific environment in which an animal lives
ventricle The lower chamber of the heart,which pumps blood out to the lungs and body
amphibian An ectchermic verte brate that spends its early life in water and its adulthood on land,returning to water to reproduce
4 down reptile An exothermic vertebrate that has lung and scaly skin
urine The watery fluid in which the wastes produced by animals cells are evceted
5 down paleontologist A scientist who studies extinct organism ,examines fossil structure and makes comparisons to present day organisms.
fossil The hardend remains or other evidence of a living thing that existed a long time in the past
sedimentary rock Rock formed from harden layers of sediments-particles of clay sand mud or silt
Created by: ajk13