FIRST CONTACTS 28000 BCE 1821 CE
NATIVE AMERICANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The giant animals starved and gradually died out.
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Nomadic people began to settle in communities.
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Huge glaciers formed during the Ice Age.
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Ancient peoples started planting crops and developing more advanced civilizations.
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Detailed explanation-1: -The Huronian glaciation is the oldest ice age we know about. The Earth was just over 2 billion years old, and home only to unicellular life-forms. The early stages of the Huronian, from 2.4 to 2.3 billion years ago, seem to have been particularly severe, with the entire planet frozen over in the first “snowball Earth”.
Detailed explanation-2: -Glaciers are masses of snow that has been compressed into giant sheets of ice. Most glaciers were formed during the last ice age. Glaciers are massive bodies of slowly moving ice. Glaciers form on land, and they are made up of fallen snow that gets compressed into ice over many centuries.
Detailed explanation-3: -The Ice Age produced glaciers that spread across North America and parts of northern Europe. In North America, glaciers spread from the Hudson Bay area, covering most of Canada and going as far south as Illinois and Missouri. Glaciers also existed in the Southern Hemisphere in Antarctica.
Detailed explanation-4: -The Ice Ages began 2.4 million years ago and lasted until 11, 500 years ago. During this time, the earth’s climate repeatedly changed between very cold periods, during which glaciers covered large parts of the world (see map below), and very warm periods during which many of the glaciers melted.
Detailed explanation-5: -Scientists have recorded five significant ice ages throughout the Earth’s history: the Huronian (2.4-2.1 billion years ago), Cryogenian (850-635 million years ago), Andean-Saharan (460-430 mya), Karoo (360-260 mya) and Quaternary (2.6 mya-present).