Question

Refer to Resource R3, Frequently Asked Questions about Climate Change. Read pages 5 and 6. View the graph on page 6 entitled “Separating Human and Natural Influences on Climate.” Study the line graph of observed average global temperatures from 1900 to 2000. Write two sentences interpreting the data displayed in this graph for “Natural Factors Only” compared to “Natural and Human Factors.” In the first sentence, summarize the temperature movement during this time period. In the second sentence, make a prediction about temperature change during the next 100 years

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How do we know humans are causing climate change? Climate scientists have concluded that humans are largely responsible for the climate change that has occurred since the 1950s.( Human activities-such as burning fossil fuels for energy, cultivating crops, raising livestock, and clearing forests-are releasing greenhouse gases into the atmosphere. These greenhouse gases are being emitted faster than forests and the oceans can remove them, causing them to build up in the atmosphere. Global Temperature and Carbon Dioxide 400 58.0 380 360 57.5 340 57.0 320 300 56.5 280 56.0 260 1880 1900 1920 1940 1960 980 2000 Red bars show global average (land and sea) temperatures above the long-term average, and blue bars indicate temperatures below the long-term average. The black line shows the concentration of co, in the atmosphere. The atmospheric concentration of carbon dioxide (CO2) has increased by more than 40% since pre-industrial times, and the current CO2 level is higher than it has been in at least 800,000 years, We know that human activities are the cause of this increase because the CO2emitted by burning fossil fuels carries a distinct chemical fingerprint that's detectable in the atmosphere.2

Answer 1

As we have seen in the line graph Shown below:

Fig-1

The CO_2­ Emission has increased within last few centuries, Which have lead to increase in temperatures. Over the last five decades, natural factors (solar forcing and volcanoes) have alone led to increase in CO₂ as shown in fig-1, But in few 100 years the global temperature had been increased from 56.5^oF to 58^oF as shown in fig-1. the important factor of increasing Global Temperature is the effects of human influ­ences, especially the emissions from burning fossil fuels and from deforestation as shown in fig-2.

Fig-2

So, two sentences interpreting the data displayed in this graph for “Natural Factors Only” compared to “Natural and Human Factors.” are-

1. The Global Temperature of the earth has been increased by 1.5^oF due to the Irresponsible activities of human (such as burning fossil fuels and from deforestation) within last few 100 years from 1900-2000.

2. if the human carries on their Irresponsible activities then the global temperature of the earth will be increased, Which will lead to the dead of living being.