The zone of proximal development is the difference between what the learner knows and what the learner is capable of
a. understanding with the from a peer
b. teaching to another less capable peer
c. understanding on one’s own
d. teaching to another more capable peer

a. by using fur or clothes to trap heat energy near the body

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.

answer; ///blank(1); green bananas; blank(2); raw potatoes;

answer///africa and asia;