With the exception of echinoderms, invertebrates are protostomes; chordates, echinoderms and vertebrates are deuterostomes.
The answer is Vaccination.
Acquired or adaptive immunity is the body's third line of defense. This is protection against specific types of pathogens. Acquired immunity may be either natural or artificial in nature. Both natural and artificial immunity have passive and active components. Active immunity results from an infection or an immunization, while passive immunity comes from naturally or artificially gaining antibodies.
Answer:
Molecules
Explanation:
I remember it from when I was in 8th grade and I had physics and science for my year in 8th so yeah that’s how I got that answer.
Answer:
try not to cheat in a test next time?
Explanation:
.