<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["de", "en"].<end_of_turn>
<start_of_turn>user
Warum sind die Dinosaurier verschwunden?<end_of_turn>
<start_of_turn>model
Scientists have no precise explanation for the disappearance of dinosaurs. What is certain is that the climatic conditions to which dinosaurs were adapted were irreversibly modified.

Here are some possible hypotheses:

- a huge comet, meteor or asteroid would have crashed into the Earth, forming a fiery plume, then clouds dispersing into the atmosphere. As they fell to Earth, these clouds would have produced immense fires, masking sunlight, therefore cooling the climate and stopping photosynthesis.

- during the time of the dinosaurs, there were many volcanoes because of the tectonic activity that occurred during the Cretaceous period. In the place where there was the most “dry” lava, the dinosaurs laid their eggs. The lava then became covered with sediment and the eggs were lost. Additionally, the volcanic dust carried into the air caused the climate to cool in the same way as the fiery plume coming from the comet.

- the internal and external movements of the Earth such as the movement of continents, changes in currents (marine and atmospheric), the uplift of mountain ranges and series of natural events would have eliminated tropical and subtropical climates.<end_of_turn><eos>