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introduces (in-truh-DOOS-es) When someone presents one person to another so they know each other’s names, that person introduces them. Bethany introduces Allie to her friends.
invite (in-VITE) To invite someone is to ask him or her to do something or go somewhere with you. Brandon would want someone to invite him to play.
irritated (IRR-i-tate-id) Someone who is irritated is mildly angry. You might feel irritated if you leave your homework behind.
jealous (JEL-uhs) Someone can feel jealous when someone else gets more attention than he or she does. The baby made Maria feel jealous.
lobes (lohbz) The lungs are divided into different sections called lobes. The left lung has two lobes, and the right lung has three.
lonely (LOHN-lee) Lonely means to be apart from others and miss their company. Lea felt lonely, so she sat on the buddy bench.
mammals (MAM-ullz) Mammals are animals that have warm bodies and feed their babies milk from their bodies. People are mammals.
measure (MEH-zhur) To measure something is to see how much of it you have. The brothers measure ingredients for the cake.
microbes (MYE-krobes) Microbes are organisms that are too small to be seen without a microscope. CDC scientists have to be careful when studying microbes that are select agents.
mutate (MYOOT-ate) To mutate is to change into something different. Viruses can mutate so that they are resistant to treatment.
nervous (NUR-vuhs) Someone who is nervous is worried. Laura was nervous about her first day of school.
outbreak (OWT-brayk) An outbreak of a disease is when the number of people coming down with it starts to climb.
outbreaks (OUT-brakes) Outbreaks are a sudden start or increase in something. Disease outbreaks occur when many people suddenly develop a disease.
oxygen (AHK-si-juhn) Oxygen is a gas with no color in the air and water. Humans need oxygen to live.
pandemic (pan-DEM-ik) A pandemic is an epidemic that has spread all over the world.
paramedic (payr-uh-MED-ik) A paramedic is a specially trained person who helps sick or injured people before and while they are being taken to the hospital.
passages (PASS-uh-jez) Passages are long, narrow spaces that connect one place to another. Air flows through passages in the body.
pneumonia (nuh-MOHN-yuh) Pneumonia is a disease that causes a person’s lungs to fill with fluid. A person with pneumonia often has a fever, cough, and difficulty breathing.
practice (PRAK-tiss) To practice is to work on something to make it better. Carlos wants to practice a song.
pulse rate (PULSS RAYT) A measurement of how fast someone’s heart is beating.