Answer:
a person with a resting heart rate higher than 70 BPM is at a greater risk for heart disease
Explanation:
i took the test and got it right
The first line of defence<span> (or outside </span>defence<span> system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.</span>
The average hieght for a 13 year old is aroud 4/ll to 5/1 . hope it help.
B decreased attention span