Mythopoeia

Flora:
Because of constant population growth and pollution rising foliage and flowers are slowly declining.

Fauna:
Domesticated animals roam the streets and livestock is scarce because of the massive population. Meat has become a delicacy and is only consumed by the wealthy while the less fortunate have to survive on other meat and crop sources.

Conlang:
English is still the most widely used language in this world.