All ornithischians are characterized by:. i. sharp pointed teeth, forward pointing pubis, bipedal stance
ii. synapsid skull, backward pointing pubis, ossified tendons
iii. ossified tendons, forward pointing pubis
iv. leaf-shaped teeth, backward pointing pubis, ossified tendons

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

it's d - life cycles - apex