What are the specialized tubes in the kidneys in which waste is collected from blood

for question 8

1: it gets the blood pumping more

2: endorphins and other neurotransmitters

it's false.

"every person has their limitations which prevent us from accomplishing something. some are better than mathematics for example and some are worse. those people who are worse might never be able to become mathematicians, but that does not mean that they would not be great at doing something else."

true. these things define the personality of the person.