* Triassic: The Triassic period was characterized by a warm and dry climate, with high levels of atmospheric carbon dioxide and methane. The global average temperature was about 15 degrees Celsius (59 degrees Fahrenheit) warmer than today, and there were no permanent ice caps at the poles.
* Present: The present-day climate is cooler and wetter than the Triassic period, with lower levels of atmospheric carbon dioxide and methane. The global average temperature is about 14 degrees Celsius (57 degrees Fahrenheit), and there are permanent ice caps at the poles.
Landmasses
* Triassic: The Triassic period saw the formation of the supercontinent Pangea, which was made up of all of the Earth's landmasses. Pangea was surrounded by a single ocean called the Panthalassa.
* Present: The present-day Earth is made up of seven continents that are separated by oceans. The largest continent is Asia, followed by Africa, North America, South America, Antarctica, Europe, and Australia.
Plant life
* Triassic: The Triassic period was dominated by gymnosperms, which are non-flowering plants that reproduce by means of seeds. The most common gymnosperms were conifers, such as pines, firs, and spruces.
* Present: Angiosperms, or flowering plants, are the dominant plant life on Earth today. Angiosperms produce flowers, which are used to attract pollinators.
Animal life
* Triassic: The Triassic period saw the rise of the dinosaurs, which were the dominant land animals. Other animals that lived during the Triassic period included therapsids, which were the ancestors of mammals, and synapsids, which were the ancestors of reptiles.
* Present: Mammals are the dominant land animals today. Other animals that live on Earth today include birds, reptiles, amphibians, and fish.
Extinction events
* Triassic: The Triassic period ended with a mass extinction event that killed off about 75% of all plant and animal species. The cause of this extinction event is not fully understood, but it may have been caused by a combination of factors, such as climate change, volcanic eruptions, and asteroid impacts.
* Present: The present-day Earth is experiencing a mass extinction event that is being caused by human activities, such as habitat destruction, climate change, and pollution.