The Earth for SamHistory of the earth from the earliest days to the time when man began to make records. Grades 5-8. |
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Page 7
... warm even if it was not boiling . These living things were so small that if you had been there with a magnifying glass , you could not have seen them . They were floating around in the water of the ocean , but the sea was not as salty ...
... warm even if it was not boiling . These living things were so small that if you had been there with a magnifying glass , you could not have seen them . They were floating around in the water of the ocean , but the sea was not as salty ...
Page 133
... warm . In Greenland and Alaska there were forests of cinnamon trees , fig trees , tree ferns , laurel , and many other plants that are now found only far south of the Arctic Ocean . It was so warm that there was no cold weather even in ...
... warm . In Greenland and Alaska there were forests of cinnamon trees , fig trees , tree ferns , laurel , and many other plants that are now found only far south of the Arctic Ocean . It was so warm that there was no cold weather even in ...
Page 219
... warm air . Just as the air had al- ways won in its conflict with the mountains , so the warm air gradually melted the ice and drove the glacier to its final stand near the tops of the high mountains and in the distant polar regions ...
... warm air . Just as the air had al- ways won in its conflict with the mountains , so the warm air gradually melted the ice and drove the glacier to its final stand near the tops of the high mountains and in the distant polar regions ...
Contents
When the Earth Was Hot | 3 |
The Air We Breathe | 9 |
Seaweed and Jellyfish | 13 |
Copyright | |
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ago and lasted American Museum amphibians ancestors animals appeared Archaeopteryx became began birds Bothriolepis bottom C. R. Knight called canyon Carboniferous Carboniferous Period chlorophyll clouds CO₂ coal Coast cold crack creodonts Cretaceous Cretaceous Period Cro-Magnon crust descendants developed Devonian dinosaurs earth Eocene Europe fauna feet Figure fishes flowed forests formed fossil giant glacier Greenland grew groups of cells horse huge ichthyosaurs inland seas insects Lake lava little particles mammals meat eaters melted rock million years ago Miocene mosasaurs Museum of Natural North America ocean Oligocene outer layer painting by C. R. peat bogs perhaps Permian Permian Period picture plants Pleistocene primates probably rain reptiles rivers rose salt scorpions seaweed sequoia shallow seas shellfish Sierra Nevada Silurian Silurian Period skin slowly Smilodon sometimes starfish streams thousands tiny trees Triassic Period Tyrannosaurus rex valley volcanoes warm wrinkles