Today, we are in the ________ geologic era.PrecambrianMesozoicCenozoicPaleozoic

To determine the current geologic era, we can analyze the options given:

1. Precambrian: This is the oldest era, covering roughly 88% of Earth's history, from the formation of the Earth about 4.6 billion years ago until around 541 million years ago.

2. Paleozoic: This era lasted from about 541 million years ago to approximately 252 million years ago. It included significant developments like the Cambrian explosion and the rise of amphibians and reptiles.

3. Mesozoic: Known as the age of reptiles, this era lasted from about 252 million years ago to around 66 million years ago. It is characterized by the dominance of dinosaurs and the emergence of mammals and birds.

4. Cenozoic: This is the current geological era, beginning about 66 million years ago and continuing to the present. It is known as the age of mammals and includes significant events such as the rise of mammals, birds, and flowering plants.

Final Answer

Today, we are in the Cenozoic geologic era.