50 points halfed if correct
which phrase best describes the main function of the kidneys?
a.
filtering wastes from the blood
b.
fighting disease-causing organisms
c.
digesting carbohydrates and fats
d.
transporting nutrients to cells

1infants internalize what they take in through their senses and                a.  show no signs of remembering it.      b.  vocalize it.      c.  display it in physical movements.      d.  forget it immediately.2 early experiences have a impact on the architecture of the brain.                a.  decisive      b.  mild      c.  minimal      d.  moderate  3which of the following is an infant's main learning tool in the first months after birth?                 a.  mouth      b.  music      c.  book exposure      d.  hands

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

Scientists who study the anatomy of the systems in the human body focus their studies on