Endorphins reducing stress levels
Answer:
The correct answer is D weather conditions weather conditions. According to a study held in 2009,
Explanation:
there were more teens who crashed during weather related incidents. The teens who were wearing a seatbelt did not suffer any fatalities. Other factors including speed limits, and law enforcement spending
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The Cleveland clinic says that allergies are the main cause for the high levels. But some other causes can include skin disorders, tumors and autoimmune disorders