The human immune system fights infection by
releasing
(1) atps (3) antibodies
(2) antibiotics (4) antigens

What happens when a magniseum ion ia atracked to a chlrene ion

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons