n the human immune system there are non-specific and specific defenses. Compare how these two methods of defense protect the human body. [Tne non-specific defenses are also called innate. The specific defenses are also called adaptive.]

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

d. planting trees

the trees take in carbon to make oxygen.

i believe the answer is snake.