Because the toxins from gas are not good to breath in and eventually we will al die from it
Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
<span>The largest mass extinction in Earth's history, the Permian–Triassic extinction event. The effects of this catastrophe were so devastating that it took life on land 30 million years into the Mesozoic to recover.[1] Recovery of life in the sea may have been much faster." </span>
Answer:
It is this effect that makes solar panels useful, as it is how the cells within the panel convert sunlight to electrical energy.
Explanation:
