NLN Pax Science practice tests

NLN Pax Science practice tests A person blows his breath into a straw that is placed in limewater. The limewater becomes cloudy because the person's breath contains: - ANSWER ~ carbon dioxide A person who was in an auto accident has formed a blood clot at the site of the injury. One event that can lead to formation of a blood clot is that: - ANSWER ~ ruptured platelets release thromboplastin A student focuses sunlight to a point with a thin converging (convex) lens. Which of these direct measurements can the student make as a result of this experiment? - ANSWER ~ the approximate focal length of the lens In ecological succession, the first living thing to colonize a hitherto barren area is called a: - ANSWER ~ pioneer organism