Is it good for a 10 year old to do 12843 steps a day?

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation

Which is the lipid molecule that controls what types of molecules can pass though?

Peter's doctor calculated his body mass index (bmi) and determined that his fat-to-lean tissue ratio was a bit too high. which of the following should peter increase in his weekly schedule to specifically address this issue?