How have cactuses adapted to the fact that it almost never rains in the desert?
A
They're covered in spikes.

B
They have thick, pleated stems.

C
They have big, waxy leaves.

D
They're camouflaged.

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.

true                                                                                                       true true true true true true

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.