Classification

question 53

Essay

Classification.The statements ask about events that have occurred during various time frames of the Earth's history.For each one,select the best choice from the following Periods during the Earth's history.
a.Quaternary
b.Cretaceous
c.Jurassic
d.Triassic
e.Cambrian
-bees and butterflies appear

---

Definitions:

Internet's Infrastructure

The physical and virtual technologies and systems that enable the internet to function, including servers, data centers, and connectivity devices.

Global System

The interconnected and interdependent structure of economic, political, social, and environmental systems across the world.

Early Research

Preliminary investigations or studies conducted at the initial stages of a research project, often exploratory in nature to gather basic information and refine research questions.

Cold War

A period of geopolitical tension between the Soviet Union and the United States, characterized by ideological rivalry and indirect conflict.