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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Evolutionary adaptation to a new environment via natural selection. Evolutionary adaptation to a new environment via natural selection.
Overview of gas exchange between the environment, blood, and cells. Overview of gas exchange between the environment, blood, and cells.
Effect of pH on drug absorption: (a) a weak acid such as aspirin (ASA) is in a nonionized form in an Effect of pH on drug absorption: (a) a weak acid such as aspirin (ASA) is in a nonionized form in an
Leadership is not about size, it's about knowledge and wisdom Leadership is not about size, it's about knowledge and wisdom
Including Students with Special Needs: A Practical Guide for Classroom Teachers, 8th Edition Including Students with Special Needs: A Practical Guide for Classroom Teachers, 8th Edition
Two Cnidarian Body Plans Two Cnidarian Body Plans
Video: Fertilization and Development

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