Hydrogen gas is harmless to your feet so since you don’t need protection against it that seems the best answer.
Answer:
The oven has many different heat sources from the bottom, sides, top, etc...
The microwave only has the sides.
Off the top of my head, I only know 9 and 11, so I'll answer those two.
9) A heterotroph is an organism that relies on other organisms for food/energy
An autotroph can produce its own food from inorganic compounds (light)
11) Vascular plants have specialized tubes for transporting nutrients
Nonvascular plants do not have such tubes and are simpler
