The delicate, spongy bone located between the eyes and forming a part of the cranial floor beneath the frontal lobes of the brain and the upper nasal cavities is the?

Ethmoid bone.

Explanation:

The ethmoid is the unpaired bone present that separate the nasal cavity. The ethmoid bone makes the orbit of the eyes.

The ethmoid bone is very delicate and spongy bone present the eyes and the part of the cranial floor. This bone lies on the upper nasal cavity and frontal lobes of the brain.

Thus, the answer is ethmoid bone.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.