Echinoderms lack respiratory and excretory systems, and lung mechanics and gas exchange are topics during study of the respiratory system. Given these facts, what do Echinoderms lack among the following options: - Lungs - Mass - oxygen - eardrum - gills - ovaries - Organs - Bodies
Lungs
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Landfills have a negative impact on the environment, and life affects environment, environment affects life. Given these facts, landfills have a negative impact on what among the following options: - Life - Clouds - plants - Earth - Fuel - biome - humans - Sunshine
Life
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Irradiating food can be used to kill existing microorganisms in the food, and food irradiation offers a solution for addressing the growing concerns associated with food safety. Given these facts, killing microorganisms in food is important to among the following options: - humans - crop yeilds - food safety - health - Cooking - Animal survival - recipe requirements - farm production
food safety
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If a thermal conductor is exposed to a source of heat then that conductor may become hot, and copper is a great thermal conductor. Given these facts, what happens to copper if exposed to heat among the following options: - contamination - produces electricity - It expands - becomes hot - they bend - becomes cold - vibrates - anemia
becomes hot
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