Compared to the levels of 1951 to 1980 and by 2020, the average global temperature has increased by

Question

BlackTom AI · Accepted Answer

Let's break down the question and evaluate each option in turn, keeping in mind what the agreement on global warming science indicates about temperature change since pre-industrial times.
Option a: 'approximately 1.5 degrees Celsius' — This value aligns with widely cited assessments that global average surface temperature has risen by about 1.0 to 1.2°C above pre-industrial levels by the late 20th century, and projections or estimates often place the observed increase near roughly 1.5°C around the period up to 2020. The statement is consistent with mainstream climate literature that identifies around 1.5°C as a notable milestone in recent decades.
Option b: 'less than one degree Celsius' — This underestimates the observed warming by 2020. Multiple authoritative sources report that warming exceeds 1°C above pre-industrial levels well before 2020, with many datasets showing about 1.0–1.2°C by the late 2010s. Saying it is less than one degree would be inaccurate given the consensus measurements.
Option c: 'two degrees Celsius' — This overstates the observed increase by 2020. While the trajectory is projected to reach higher levels in some scenarios by 2100, the actual observed warming by 2020 is not as high as 2°C. Therefore, this option exaggerates the recent warming relative to the timeframe specified.
In summary, each option reflects a possible claim about historical warming, but the most accurate characterization for the period up to 2020 is a rise on the order of about 1.5°C, whereas option b underestimates and option c overestimates the observed increase for that timeframe.

Compared to the levels of 1951 to 1980 and by 2020, the average global temperature has increased by

View Explanation

Log in for full answers

Similar Questions

Identify the topic words in the following assignment question:   Discuss how the issues associated with global warming might be understood as a wicked problem.  Please select all that apply

In predicting climate change, what are atmospheric carbon dioxide (CO2) levels used as an indicator of?

Listen to this mini-lecture about the low carbon economy.Questions 13-14. Fill in the gaps with ONE OR TWO WORDS from the mini-lecture. 13. Answer Question 11[input] is the most urgent reason to create a low-carbon economy.

What was the likely cause of major warming during the first 50 years of the 20th century?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler

Compared to the levels of 1951 to 1980 and by 2020, the average global temperature has increased by

View Explanation

Log in for full answers

Similar Questions

Identify the topic words in the following assignment question: Discuss how the issues associated with global warming might be understood as a wicked problem. Please select all that apply

In predicting climate change, what are atmospheric carbon dioxide (CO2) levels used as an indicator of?

Listen to this mini-lecture about the low carbon economy.Questions 13-14. Fill in the gaps with ONE OR TWO WORDS from the mini-lecture. 13. Answer Question 11[input] is the most urgent reason to create a low-carbon economy.

What was the likely cause of major warming during the first 50 years of the 20th century?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

More Practical Tools for Students Powered by AI Study Helper

Making Your Study Simpler

Identify the topic words in the following assignment question:   Discuss how the issues associated with global warming might be understood as a wicked problem.  Please select all that apply