If abreathing mask is used for keeping air pollution from the respiratory system, then what does a gas mask keep out? Answer choices: - disease - The atmosphere - heat energy - air pollution - energy barrier - Bodily water - Dehydration - bacteria
air pollution
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If the need for plants to absorb minerals and water from the soil also leads to them preventing soil erosion, then what is a positive effect of plant needs for water and minerals from soil? Answer choices: - erosion prevention - reducing acid rain - It helps them survive - agriculture - nutrient deficiency - water run-off - erosion - Exfoliation
erosion prevention
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If birds have amniotic eggs, then what kind of eggs do birds have? Answer choices: - animals - insects - amnotic - seeds - fertile - made - white - warm
amnotic
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If marshes and swamps are extremely important biomes, then what are extremely important biomes? Answer choices: - important habitats - urban city - remains of prehistoric life - zoos - water conservation - Most plants - manmade aqueducts - marshes and swamps
marshes and swamps
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