GENERAL ANATOMY
EMBRYOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The Earth’s surface has not changed over time.
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The Earth’s continents have not hanged over time, but some islands have formed.
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The Earth is exactly the same as it was millions of years ago.
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The Earth has evolved over time.
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Detailed explanation-1: -Plate tectonics shift the continents, raise mountains and move the ocean floor while processes not fully understood alter the climate. Such constant change has characterized Earth since its beginning some 4.5 billion years ago. From the outset, heat and gravity shaped the evolution of the planet.
Detailed explanation-2: -So, the correct answer is ‘All modern species have arisen from previous forms, and continue to evolve’
Detailed explanation-3: -Life began on Earth at least 3.5 to 4 billion years ago, and it has been evolving ever since. At first, all living things on Earth were simple, single-celled organisms. Much later, the first multicellular organisms evolved, and after that, Earth’s biodiversity greatly increased.
Detailed explanation-4: -The Earth was formed about 4.6 billion years ago, that’s 4, 600, 000, 000 years ago. It was formed by collisions of particles in a large cloud of material. Slowly gravity gathered together all these particles of dust and gas and formed larger clumps.