The 20 minute physical activity I performed was doing yardwork. It was fairly easy to do, besides a lot of bending down involved to pick up sticks. I did it in my front and backyard for a bit over 20 minutes, and no one did it with me.
Skeletal and Muscular:
The muscles help move the bones when you need to move your arm to do something like writing something down or raising your hand.
Skeletal and Nervous:
<span>Sensory receptors in joints between bones send signals about body position to the brain.
Muscular and Nervous:
</span><span>Receptors in muscles provide the brain with information about body position and movement.</span>
<span>Cardiac arrhythmias are most often caused by
:
</span><span>-tobacco
-coffee
-stress
cocaine -consumption...</span>
The choices for this question can be found elsewhere and as follows:
a. decreased significantly
b. increased significantly
c. stayed at the same levels
d. decreased slightly
I believe the correct answer from the choices listed above is option B. <span>Over the past 20 years, the major pollutants in our world have increased significantly. It is very evident when you look at the environmental statistics.</span>
