D. because if they're not careful they become extinct by predators, then they have to be careful to survive by staying alert.
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autism
"Mechanical Energy is the energy of motion of an object"
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Ultraviolet sun rays it damages the cells and can cause skin cancer.
Answer: base substitutions, deletions and insertions
Coach can first recognize heat stroke by increased in body temperature brought on by intense physical activity in hot weather. Exertional heat stroke is a medical emergency; the emergency medical service should be called for and while waiting for them, affected person should be moved into a cool place and all outer clothing materials should be removed from his body.