Answer:
3 the third one "walking on different terrains
Insulin and glucagon are hormones secreted by islet cells within the pancreas. They are both secreted in response<span> to </span>blood sugar levels<span>, but in opposite fashion! ... Although there is always a low </span>level<span> of insulin secreted by the pancreas, the amount secreted into the </span>blood increases<span> as the </span>blood glucose<span> rises.</span>
