A half life is the amount of time it takes for half of an isotope to decay in a given sample. The half life of carbon 14 (which is an isotope) is 5730 years. Carbon-14 is present in many fossils, hence scientists use this to figure out the age of fossils, this specific usage is called carbon dating.
Answer:
increased attention and decreased fatigue
increased activity and wakefulness
decreased appetite
euphoria and rush
increased respiration
rapid/irregular heartbeat
hyperthermia
Explanation:
Answer: False. Explanation: Endurance focuses on maintained exercise, not intense exercise. The best way to do this is though extending the amount of reps.
