If starfish, sea urchins and sea cucumbers lack a centralized nervous system, then starfish, sea urchins and sea cucumbers lack a what? Answer choices: - characteristics - the body's largest organ - watery habitat - centralized nervous system - functioning arm - underwater life - biological diversity - epidermis and dermis
centralized nervous system
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If platypus females nest in a burrow and wait for the hatching, then what females nest in a burrow and wait for the hatching? Answer choices: - ostrich - burrowing rabbits - loose soil - insects - warm-blooded - honeybees - rooster - platypus
platypus
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If sand and dust are formed by mechanical weathering, then what is a beach formed by? Answer choices: - movement of tectonic plates - heat change - mechanical weathering - By coral exoskeletons - seasonal changes - patch reefs - sedimentation - Nurseries of the ocean.
mechanical weathering
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If heat and pressure change the remains of dinosaurs into natural gas, then what does heat and pressure change into natural gas? Answer choices: - Something formed from skeleton - compound of hydrogen oxygen - Chemical energy - art - kinetic energy - remains of dinosaurs - preparation - science
remains of dinosaurs
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