Final answer:
Chicken cooking in an oven and making jam have the common factor of being caused by heating.
Step-by-step explanation:
In this question, both chicken cooking in an oven and making jam have the common factor of being caused by heating. In the case of chicken cooking in an oven, the heat from the oven causes chemical changes to occur, such as proteins denaturing and browning reactions.
On the other hand, making jam also involves heating, which helps to break down the pectin in the fruit and create a thick, spreadable consistency.