Read the text and choose the correct options

Three teenagers—Lena, Danil and Artem—have to make a presentation on an environmental problem. They decided to search the internet for some information.

Climate Change: What Is It?

Carbon dioxide or CO₂ is vital for our planet not to get frozen solid, since it makes air, soil and ocean waters warmer. But now a new problem has arisen: the levels of CO₂ are reaching a critical point where there is too much of it being produced due to cars, factories, deforestation and agriculture to some extent. This leads to temperature rising all over the globe, which may seem nice at first—there is no snow in winter, and the climate is mild, so you can wear a coat as if it is spring. But the problem lies in how harmful it is to nature. Extreme droughts lead to increased risk of wildfires, and the rising sea levels cause flooding and, as a result, destruction not only of people's property and crops but also of the soil's natural balance. Moreover, it leads to the extinction of many plants and animals all around the world.

What does carbon dioxide do?

• Warms ocean waters, air and soil
• Makes the planet frozen solid
• Causes global warming to stop

What does NOT cause global warming?

• Works
• Fabrics
• Vehicles
• Cutting trees down

Which is NOT the outcome of global warming?

• Deforestation
• Droughts
• Floods
• Animal and plant extinction