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Since life began on Earth, hundreds of millions of species of plants and animals have been threatened with extinction, and over the past 300 years the extinction process has substantially accelerated due to habitat destruction caused by people. |
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Hundreds of millions of species of plants and animals have become extinct since life began on Earth, and over the past 300 years people have been damaging habitats, thus significantly speeding up the extinction process. |
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Hundreds of millions of species of plants and animals have become extinct since life began on Earth, and over the past 300 years people have dramatically speeded up the extinction process by destroying habitats. |
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Since life began on Earth, hundreds of millions of species of plants and animals have become extinct, and habitats have been damaged by people, which has substantially accelerated the extinction process for the past 300 years. |
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There are hundreds of millions of species of plants and animals that have faced extinction since life began on Earth, and people who are destroying habitats have dramatically speeded up the extinction process for the past 300 years. |