OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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organisms that are more complex than those of today
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organisms that are simpler than those found today
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both simple and complex organisms
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only organisms that are alive today
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Detailed explanation-1: -For example, the fossil record shows us that there has been an overall increase in the complexity of organisms over time. It also shows us that there has been an increase in organism diversity. The fossil record shows us when specific types of organisms appeared, went extinct, or changed.
Detailed explanation-2: -The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.
Detailed explanation-3: -Fossils are the remains or traces of ancient life that have been preserved by natural processes. Examples of fossil include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants.
Detailed explanation-4: -Examples of the fossil records are stratified rocks exposed in the walls of the Grand Canyon, complex plants, and animals evolving from the unicellular organism showed that life on Earth was once different from today’s life on the planet.