A, it is the current era, and D, it was also known as the age of mammals.
Answer:
Reconstruction era im so sorry im not sure but i think that's the answer
Answer:
An ecosystem is a natural environment that includes all the biotic (living organisms) parts for example plants and animals and the abiotic (non-living) such as soil, rocks and climate sharing an environment.
Geography do 10 questions from pages 159 to 164.
