Chronic Exposure is a repeated or prolonged exposure over<span> a </span>long<span> period of time </span>that may bring about slowly developing symptoms<span>.</span>
Answer:
Early humans that likely evolved from Cro-Magnons - <u>Homo</u><u> </u><u>sapiens</u><u>.</u>
Pro: physical education allows for students to take a mental break and become active which promotes a healthy lifestyle, better circulation and oxygen increase with exercise has been proven to aid In learning.
con: If not done correctly or with a well educated teacher p.e can be harmful to physical and even mental health of children who are not athletic.
Because of water movement in and out of cells