Four. Precambrian, Paleozoic, Mesozoic, Cenozoic.
the 16th centuary
1900 to 1920
Nathan hale was being hung
You don't specify which time period. This is why it's a bad idea to copy-paste your homework questions onto the internet.
As a matter of fact, yes! We are still in the Cenozoic Era in our current time.
Many of the forest plants became completely extinct in the Cenozoic Era. However, the plants that thrive today became rooted during this period.
Humans appeared during the Quaternary period of the Cenozoic era, which began around 2.6 million years ago. This era is marked by the development of modern human species and the emergence of Homo sapiens.
Plants
ok im going to start off by saying this, the last answerer is stupid, and doesnt know what he is talking about. it goes from: PERIOD ERA EPOCH there you go ;)
The Cenozoic Era is the Age of Mammals!
The Cenozoic Era is the Age of Mammals!
During the Cenozoic era, which began around 66 million years ago and continues to the present, there was a diversification of plant life. This era saw the rise of flowering plants (angiosperms) that dominate terrestrial ecosystems today, as well as the spread of grasslands and the evolution of many modern plant families. Additionally, forests with trees like oaks, maples, and conifers were prominent during this time.
The Cenozoic Era has the greatest variety and quantity of mammalian life.
The Cenozoic era
Cenozoic
Precambrian Era, Paleozoic Era, Mesozoic Era, Cenozoic Era