Article: After the "Big Bang ",the earth was just a cloud of energetic dust. What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun. The problem was that the earth became violent because it was not clear whether the solid shape was to last or not. It exploded loudly with fire and rock, which were in time to produce the water vapor, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth's atmosphere. As the earth cooled down, water began to appear on its surface. Nobody knew that it was going to be different from other planets going round the sun. Water had already disappeared from planets like Mars or satellites like the moon, but it stayed on the earth. This is how the earth began to show its special qualities. Many people think that this was important for the beginning of life. It allowed the earth to dissolve harmful gases, which had become part of the earth's atmosphere, into the oceans and seas. That made it possible for life to begin to develop. What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surface. Nobody understood that these plants were the start of many changes. They multiplied and filled the first oceans and seas with oxygen .This encouraged the development of early shellfish and all sorts of fish. Many millions of years later the first green plants began to appear on land. Scientists believe that taking carbon dioxide from the atmosphere and filling the air with oxygen helped life to develop. Later land animals appeared. Some were insects. Others, called amphibians, were able to live on land as well as in the sea. When the plants grew into forests, reptiles appeared for the first time. They produced young generally by laying eggs. Later, some huge animals, called dinosaurs, developed, They laid eggs too. They became the most important animals on the earth for millions of years. But when they disappeared, mammals became more important. They were the last... Question: What problem is caused by human beings? Yes or no, is the answer "They cause global warming."?
Yes