How are the liver and kidneys alike?

they both aid digestion

they both filter harmful substances out of the body

they both break down food

they both produce bile

What does gradualism and punctuated equilibrium have in common

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?