How do informal and formal learning differ?
one is more structured than the other.
one requires less effort.
one requires a mentor and a student.
choices a and c

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

the awnser is d you right bro                      

the answer you are looking for is d. there are no holes for blood to enter or leave the system. your welcome