Provide an example using one organ for each of the four levels of complexity. Why is it difficult to make level four organs in a lab? Please help :)

a perfect upbringing he will grow up to be healthy and confident adult.

the answer is:

i had an assignment in the biology course where i should write a few paragraphs about an experience. the teacher didn't give us a rubric. if i had one i could have paid closer attention to the criteria that has the highest scores. this could have improved my grade.

hope it !

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.