Which type of immunity works not to destroy pathogens but to prevent them from entering circulation at all? A) active immunity

B) adaptive immunity

C) innate immunity

D) acquired immunity

What are the functions of the various parts of the neuron? how are messages transmitted through the nervous system? make sure that your response demonstrates that you understand how this works!

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

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?