Climate Change

Fill in the blanks. The most common greenhouse gas is carbon dioxideEvidence of climate change includes: Global average temperaturesare increasing; ice sheets are meltingocean levels are risingbirds are not flying as far south Sort the phrases into two groups. Problems caused by climate change. flooding droughts wildfires food shortages spread of disease extinction NOT problems caused by climate change. fewer storms cheaper oil gas prices healthier ecosystems Give an example of how to reduce carbon dioxide emissions. What color in the video above indicates WARMER temperatures? yellow and red blue and white yellow and blue Which TWO statements are the most accurate, base on the video above? average temperatures seem to go up and down somewhat over time overall temperatures were warmer in the 1800s than in the 2000s average temperatures have been dropping since the 1800s overall temperatures were warmer in the late 1900s and 2000s than in the 1800s Describe how the location might be affected by climate change and might contribute to climate change. Which factor is often responsible for the other three? increase in levels of toxins in both water and air increase in human population increased poverty and malnutrition decrease of resources One possible reason for the rise in the average air temperature at Earth’s surface is that decomposers are being destroyed deforestation has increased the levels of oxygen in the atmosphere industrialization has increased the amount of carbon dioxide in the air growing crops is decreasing the ozone shield The graph below shows how the level of carbon dioxide in the atmosphere has changed over the last 50 years.Which environmental factor has been most recently affected by these changes in carbon dioxide level? light intensity size of consumers types of decomposers atmospheric temperatures In some parts of the world forests are being cut down and burned to clear land for new homes and new farmland. A negative effect of these activities might be an increase in global warming destruction of the ozone shield a decrease in the average temperature of the atmosphere an increase in biodiversity in these areas Which two gases in Earth’s atmosphere are believed by scientists to be greenhouse gases that are major contributors to global warming? hydrogen and helium carbon dioxide and methane oxygen and nitrogen ozone and chlorine