Programmed Theories - it suggests that our body is designed to age and that there is a timeline that our bodies follow, and switch in our genes that switches off over time.
Error Theories - we age because of environmental hazards that our bodies accumulate over time.
Explanation:
Smooth muscle can be found in the walls of hollow organs and passageways, they can contract and they have fibers of actin and myosin tuning though it arranged in an staircase form.
In the images I added you can see how smooth muscle looks when observed in a microscope, wider in the middle and elongated at the ends, and the staircase arrangement.
I hope you find this information useful and interesting! Good luck!
Well DNA is the blueprint for a person's body and tells the RNA what to do, so I guess it plays many roles... the transfer of DNA determines what a person (baby) will end up looking like once it he/she exits the womb
TRYNA MARrk me BRAINLEST
Explanation:
Reflection is when light bounces off an object.
You can get a nasty case of heart burn!