Answer:
because of pollution and less good environment
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>
Pulmonary circulation transports oxygen poor blood from the right ventricle to the lungs to get oxygenated.
I see a wall i touch the wall i jump over the wall
BTW I GOT THE POINTS
It's D. The answer below should not be certified as it is incorrect. If you are HIV You will likely show symptoms. If you do not then you asymptomatic.