SCIENCE
ENVIRONMENTAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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3, 4
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4, 5
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5, 6
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6, 7
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Detailed explanation-1: -There have been five mass extinction events in Earth’s history. At least, since 500 million years ago; we know very little about extinction events in the Precambrian and early Cambrian earlier which predates this. These are called the ‘Big Five’, for obvious reasons.
Detailed explanation-2: -What’s causing the sixth mass extinction? Unlike previous extinction events caused by natural phenomena, the sixth mass extinction is driven by human activity, primarily (though not limited to) the unsustainable use of land, water and energy use, and climate change.
Detailed explanation-3: -New research predicts that more than a quarter of the world’s animals and plants could go extinct by the end of the century. Earth has entered its sixth mass extinction event, with severe loss of animal and plant life expected by the end of the century, according to a new study.
Detailed explanation-4: -Ordovician-Silurian extinction. Late Devonian extinction. Permian-Triassic extinction. Late Triassic extinctions. Cretaceous-Paleogene extinction. Sixth mass extinction.