pollution , when dirty or harmful things get into the air, water, or land., climate change, when the Earth’s weather becomes different over time, usually getting hotter., birth defects, a baby is born with a health problem or a body part that didn’t form normally., Global warming , Earth’s temperature slowly getting hotter because of too much heat-trapping gases in the air., Toxic , very dangerous or poisonous, can harm people, animals, or the environment., scientists , people who study how things work in nature and do experiments to learn new facts., wildlife , animals, birds, and plants that live in nature, not in homes or farms., Drought , a long time without rain, causing water shortage., Greenhouse gases , gases in the air that trap heat and make Earth warmer., Unemployment , when people don’t have jobs but want to work..

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