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On days when the air nearest the ground is colder than air above, sound waves
Low-Income Families
Households earning significantly less than the median income, often experiencing financial stress and limited access to resources.
Medicare
A federal health insurance program in the United States primarily for people who are 65 or older, as well as for some younger people with disabilities or specific conditions.
Federal Insurance
programs or coverage provided by the national government to protect citizens against specific risks like unemployment, health issues, or retirement.
Aged 65
Refers to individuals who are 65 years old or older, often considered a benchmark age for 'elderly' or 'senior' status in many societal contexts.
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