Why is a chemical equilibrium described as dynamic?

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved