Question 1:
Which era is known as the "Age of Dinosaurs"?
Explanation: The era known as the "Age of Dinosaurs" is the "Mesozoic Era." This era spanned from approximately 252 to 66 million years ago and is divided into three periods: the Triassic, Jurassic, and Cretaceous. Dinosaurs were the dominant land animals during this time.
Question 2:
Which era is characterized by the development of complex life forms, including fish, plants, and insects?
Explanation: The era characterized by the development of complex life forms, including fish, plants, and insects, is the "Paleozoic Era." This era, also known as the "Age of Invertebrates," spanned from approximately 541 to 252 million years ago. It witnessed the emergence of diverse marine life, the colonization of land by plants and animals, and the formation of ancient mountains.
Question 3:
Which geological eon represents the largest portion of Earth's history?
Explanation: The geological eon that represents the largest portion of Earth's history is the "Proterozoic Eon." It extended from approximately 2.5 billion to 541 million years ago, making it the longest eon in Earth's history. During this time, significant geological and biological events occurred, including the emergence of oxygen-producing organisms and the formation of supercontinents.
Question 4:
Which era followed the extinction of dinosaurs and saw the rise of mammals?
Explanation: The era that followed the extinction of dinosaurs and saw the rise of mammals is the "Cenozoic Era." Also known as the "Age of Mammals," it began approximately 66 million years ago and continues to the present day. The Cenozoic Era witnessed the diversification and dominance of mammals, including the evolution of primates and eventually humans.
Question 5:
Which geological era preceded the Paleozoic Era?
Explanation: The geological era that preceded the Paleozoic Era is the "Proterozoic Era." It spanned from approximately 2.5 billion to 541 million years ago and was characterized by significant geological and biological developments, including the formation of the first continents and the emergence of eukaryotic life.