KIDS QUIZ
DINOSAURS AND PREHISTORIC ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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are
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are not
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aren’t
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None of the above
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Detailed explanation-1: -The best-known extinct animals are dinosaurs, huge animals that disappeared about 65 million years ago. Sponges, corals, sea stars (starfish), snails, and clams-all familiar creatures today-can be traced back 500 million years or more.
Detailed explanation-2: -Sponges were among the earliest animals. While chemical compounds from sponges are preserved in rocks as old as 700 million years, molecular evidence points to sponges developing even earlier. Oxygen levels in the ocean were still low compared to today, but sponges are able to tolerate conditions of low oxygen.
Detailed explanation-3: -Known as an ichthyosaur, the animal lived about 205 million years ago and was up to 85 feet long-almost as big as a blue whale, say the authors of a study describing the fossil published today in PLOS ONE.