Answer:
False
Explanation:
Some heart arrhythmias do not need treatment. Heart arrhythmia treatment is usually only needed if the irregular heartbeat is causing significant symptoms, or if the condition is putting you at risk of more-serious heart problems.
Answer:
D) a scientific journal about chemistry and a biography of a famous chemist
Bryophytes never form xylem tissue, the special lignin- containing, water-conducting tissue that is found in the sporophytes of all vascular plants.
Answer:
overreacts to an antigen
Explanation:
Allergies to substances are as a result of immunological dysfunction.
