OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Not all former life was preserved as fossils.
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Ocean animals migrated several miles inland.
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Ocean waters covered the land millions of years ago.
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Volcanoes erupted, and the animals were preserved in the lava.
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Detailed explanation-1: -Which best explains why fossils of the same species of a reptile were discovered in South America and in western Africa? The reptiles evolved in both South America and Africa.
Detailed explanation-2: -Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet’s history. They can also help scientists reconstruct the evolutionary histories of present-day species.
Detailed explanation-3: -Life on Earth began about 3.5 to 4 billion years ago. The first life forms were single-celled organisms similar to bacteria. These first life forms were, of course, very basic, and this then allowed for the evolution of more complex life forms.
Detailed explanation-4: -Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.