The answer is the Dinosaurs and the Pterosaurs.
The Jurassic Period follows Triassic Period. It is known as the Age of Reptiles. the land was dominated by the dinosaurs and the flying pterosaurs. Both groups are reptiles. Other animals and plants during this period have just recovered from the largest mass extinctions on Earth.
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Answer:
There will be an increase in the level of nitrogen dioxide and a decrease in the level of ground-level ozone.
Explanation:
Ozone is a gas normally found in stratosphere, where it protects us from solar radiation. However, under certain circumstances, it can be formed on the ground level.
Conditions that have to be met in order for this to happen are existing of nitrogen oxides and volatile organic compounds (VOC) (both formed from the factories, industry and transport) and their reaction catalyzed by heat and light.
During dark, cold and cloudy days, due to the lack of heat and light from the Sun, formation of ozone will be decreased.
Also, this will enable building up of nitrogen dioxide, due to the same reason, leading to increased concentration.
