How does electromagnetic spectrum related to expanding universe

(This is not biology)

Some of the proof that the Universe is still expanding is the Doppler Effect, which consists of : when radiation is emitted, its frequence is higher the closer it is to the object receiving that radiation. So when explaining the universe expansion cientists base on the fact that the radiation emitted by the planets are reducing their frequences gradually.

I tried my best, I hope this helps!

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation: