Evolution. The Earth has been home to living things for about 3.8 billion years. Evidence. Fossils – the remains of once living organisms preserved in the Earth Types of fossils: Hard Body parts (such as bones, teeth, shells ) Imprints in Sedimentary Rock. W hich rock layer is the oldest?.
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The Earth has been home to living things for about 3.8 billion years.
We know today that the changes arise from genetic mutations or variations that are passed down from generation to generation.
acquired a characteristic during its
lifetime, it could pass it onto its offspring.
Origin of Species after studying
a variety of species on his voyage.
Mendel and his peas
Natural Selection in the Peppered Moth