Oxygen makes up the largest part of living cells at 65%. What is the percentage of the second-most
abundant element in living cells?

Yes

Explanation:

The phenomenon is referred to as wave-particle duality. This is the concept that describes the behaviour of a wave like particles, like waves or  like both particles and waves.

These two are contradictory to each other because waves can only behave as matter (particles) or only as waves at a time. Waves can not behave as both simultaneously. Hence this concept can also be referred to as wave-particle paradox.