Tigers have lived in the wild ______ thousands of years.
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Giant pandas have been with us ______ 8 million years.
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Rhinos have been on this planet ______ about 50 million years.
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Blue whales have roamed the oceans ______ at least 1.5 million years.
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Sea turtles have existed on Earth ______ the time of the dinosaurs.
since
Orangutans have been part of the rainforest ______ millions of years.
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Koalas have been around ______ the time of early humans.
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Elephants have lived on Earth ______ millions of years.
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The snow leopard has existed in the mountains ______ prehistoric times.
since
The red wolf has been part of North America’s ecosystem ______ thousands of years.
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Polar bears have survived in the Arctic ______ the last Ice Age.
since