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Top 19 dinosaurs became extinct millions of years ago chi tiết nhất

Top 19 dinosaurs became extinct millions of years ago chi tiết nhất

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Extinction is Forever!

To become extinct is to be gone forever. Even before the arrival of humans on Earth, species became extinct quite naturally. Natural extinction happens when a species declines in numbers gradually but steadily at the end of its evolutionary period on Earth. The length of this period depends on how well a species can adapt to changes in climate and changes in other animals and plants around it. This process of extinction can take a very long time – sometimes several million years – and the extinction of one species is immediately followed by the appearance of another in a continuous cycle.

The case of the dinosaurs is the most well-known example of natural extinction. These reptiles appeared on Earth about 200 million years ago and dominated both land and sea for almost 100 million years. It is not certain why the dinosaurs became extinct, but their disappearance was a natural one and new species of animals evolved to replace them.

DinosaurThe rate of extinction has speeded up unnaturally over the last 400 years, rising sharply since 1900. This increase in the rate of extinction is directly related to the increase in the human population over the same period of time. Humans have caused great damage to the planet, as wild habitats have been taken over, forcing animals and plants into smaller and smaller areas, until some of them have become extinct. We have also polluted some habitats with chemicals and refuse, making them unfit for wildlife. These causes of extinction are known as indirect destruction.

Animals may also become extinct through direct destruction. This includes the hunting and capturing of animals. Humans have always hunted and killed wildlife but early humans lived more in harmony with nature, they killed animals for essentials like food and clothing. When guns were invented mass destruction of species was possible. Animals have been, and still are, killed for meat, clothing,medicines, feathers, eggs, trophies, tourist souvenirs – and sometimes just for amusement. Some species are still captured in the wild for the live pet trade, even though their numbers are dwindling.

The extinction of at least 500 species of animals has been caused by humans, most of them in the 20th century. Today there are about 5,000 endangered animals and at least one species dies out every year. There are probably many more which become extinct without anyone knowing.

The main threats to species then can be cited as poaching, habitat loss and climate change. The International Union for Conservation of Nature has its own “Red List” of endangered species ranging from “least concern” through to “critically endangered”. It is their assessment which we’ll refer to here.

Do Do“Dead as a dodo”

The dodo has become a symbol of extinction. It was a turkey-sized flightless pigeon which lived on the island of Mauritius. When sailors landed on the island for the first time in the sixteenth century, they killed the helpless bird for food. The dodo’s eggs and young were eaten by dogs, cats, pigs, rats and monkeys which man had introduced to the island. The dodo, unused to predators, very quickly declined in numbers – and it was extinct by 1681.

Read More: Habitat destruction

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Dinosaurs became extinct millions of years ago … – hoidapvietjack.com

  • Tác giả: hoidapvietjack.com
  • Ngày đăng: 07/28/2022
  • Đánh giá: 5 (835 vote)
  • Tóm tắt: Dinosaurs became extinct millions of years ago because of the earth’s climate changed drastically. (A) Beame extinct(B) Because of(C) The …

Dinosaurs became millions of years ago

  • Tác giả: cunghocvui.com
  • Ngày đăng: 03/03/2022
  • Đánh giá: 4.64 (574 vote)
  • Tóm tắt: Hướng dẫn giải. disappear (v): biến mất. extinct (adj): tuyệt chủng. dangerous (adj): nguy hiểm. endangered (adj): bị đe dọa.

Dinosaur – Extinction – Encyclopedia Britannica

  • Tác giả: britannica.com
  • Ngày đăng: 06/28/2022
  • Đánh giá: 4.59 (349 vote)
  • Tóm tắt: The mass extinction of dinosaurs 66 million years ago remains a … books and media is that all the dinosaurs died out at the same time—and apparently quite …

Dinosaurs became millions of years ago

  • Tác giả: hoctapsgk.com
  • Ngày đăng: 12/24/2021
  • Đánh giá: 4.35 (352 vote)
  • Tóm tắt: Choose A, B, C, or D that best completes each sentence. Dinosaurs became ____ millions of years ago. A. disappear B. extinct C. dangerous D. endangeredTrang …

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Why did the dinosaurs become extinct? Could cholecalciferol (vitamin D3) deficiency be the answer?

  • Tác giả: ncbi.nlm.nih.gov
  • Ngày đăng: 09/11/2022
  • Đánh giá: 3.94 (223 vote)
  • Tóm tắt: Geological evidence indicates that dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years …
  • Khớp với kết quả tìm kiếm: Early in the development of knowledge about the biology of cholecalciferol, it was observed that hatchability of domestic hen eggs produced during winter was low, particularly if the laying hens had been kept indoors. Hatchability improved when hens …

What killed the dinosaurs? | Natural History Museum

  • Tác giả: nhm.ac.uk
  • Ngày đăng: 06/28/2022
  • Đánh giá: 3.75 (523 vote)
  • Tóm tắt: Find out why most dinosaurs became extinct 66 million years ago at the end of the Cretaceous Period. Birds were the only dinosaurs to survive the mass …

Dinosaurs became extinct  millions of years ago because of   the earth’s  climate changed drastically .  

  • Tác giả: qa.haylamdo.com
  • Ngày đăng: 03/28/2022
  • Đánh giá: 3.48 (424 vote)
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Why Did the Dinosaurs Die Out?

  • Tác giả: history.com
  • Ngày đăng: 10/19/2022
  • Đánh giá: 3.24 (220 vote)
  • Tóm tắt: The Permian-Triassic extinction event, known as the Great Dying, occurred 251.4 million years ago and eradicated 96 percent of all marine …
  • Khớp với kết quả tìm kiếm: Then in 1991, a massive meteor crater 110 miles in diameter was discovered on the edge of the Yucatán Peninsula, extending into the Gulf of Mexico. The Chicxulub Crater, as it was dubbed, was named for a nearby village. Scientists believe the bolide …

New clues unearthed about mammals rapid evolution after dinosaur extinction

  • Tác giả: ec.europa.eu
  • Ngày đăng: 02/08/2022
  • Đánh giá: 3.13 (219 vote)
  • Tóm tắt: Around 66 million years ago, at the end of the Cretaceous period, an asteroid struck the Earth, triggering a mass extinction that killed off the dinosaurs …
  • Khớp với kết quả tìm kiếm: As part of the four-year BRUS project which ended in March, Dr Brusatte and his team collected new fossils dating back to the first million years after the extinction, which is thought to have lasted about 60,000 years, and put together a family …

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When did dinosaurs become extinct?

  • Tác giả: usgs.gov
  • Ngày đăng: 07/14/2022
  • Đánh giá: 2.94 (147 vote)
  • Tóm tắt: Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years.

Why did the dinosaurs go extinct?

  • Tác giả: nationalgeographic.com
  • Ngày đăng: 09/11/2022
  • Đánh giá: 2.75 (92 vote)
  • Tóm tắt: Learn about the mass extinction event 66 million years ago and the evidence for what ended the age of the dinosaurs.
  • Khớp với kết quả tìm kiếm: Along with them went fearsome marine reptiles such as the mosasaurs, ichthyosaurs, and plesiosaurs, as well as all the flying reptiles known as pterosaurs. Ancient forests seem to have flamed out across much of the planet. And while some mammals, …

Dinosaurs became extinct millions of years ago because of the earth&x27s climate

  • Tác giả: doctailieu.com
  • Ngày đăng: 06/02/2022
  • Đánh giá: 2.66 (104 vote)
  • Tóm tắt: Dinosaurs became extinct millions of years ago because of the earth’s climate.

Dinosaurs became extinct millions of years ago because of the earth’s climate changed drastically

  • Tác giả: tracnghiem.net
  • Ngày đăng: 07/19/2022
  • Đánh giá: 2.54 (197 vote)
  • Tóm tắt: Dinosaurs became extinct millions of years ago because of the earth’s climate changed drastically . A. became extinct. B. because of. C. The earth’s.

Dinosaurs became extinct millions of years ago because of the earths climate changed drastically

  • Tác giả: congthucnguyenham.club
  • Ngày đăng: 08/19/2022
  • Đánh giá: 2.51 (132 vote)
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Choose A, B, C, or D that best completes each sentence. Dinosaurs became millions of years ago

  • Tác giả: vietjack.online
  • Ngày đăng: 12/08/2021
  • Đánh giá: 2.32 (77 vote)
  • Tóm tắt: disappear (v): biến mất. extinct (adj): tuyệt chủng. dangerous (adj): nguy hiểm. endangered (adj): bị đe dọa. Cấu trúc “become + adj”: trở nên như thế nào.

Dinosaurs became extinct millions of years ago … – giainhanh.vn

  • Tác giả: giainhanh.vn
  • Ngày đăng: 07/04/2022
  • Đánh giá: 2.22 (102 vote)
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[Solved] Of the following statements there are two statements both of

  • Tác giả: testbook.com
  • Ngày đăng: 05/07/2022
  • Đánh giá: 2.2 (153 vote)
  • Tóm tắt: (i) Dinosaurs became extinct in the Cretaceous-Paleolithic era … Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), …

TOP REASONS WHY DINOSAURS BECAME EXTINCT

  • Tác giả: dinosaurworldlive.com
  • Ngày đăng: 02/24/2022
  • Đánh giá: 2.14 (130 vote)
  • Tóm tắt: But at the point where the Cretaceous period moved into the Paleogene period – about 66 million years ago – dinosaurs suddenly seem to have been wiped out.
  • Khớp với kết quả tìm kiếm: Around 70 million years ago – some four to five million years before the mass extinction event – there seems to have been a lot of violent volcanic activity in northern India. The theory is that over tens of thousands of years, the dust and ash that …

Dinosaurs became millions of years ago

  • Tác giả: hoctap247.com
  • Ngày đăng: 04/12/2022
  • Đánh giá: 2.03 (50 vote)
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