The following four statements about global climate change are all considered tru

Question

The following four statements about global climate change are all considered true by the scientific community:

A) Carbon dioxide levels in the atmosphere are rising as a direct result of man-made CO2 emissions from the burning of fossil fuel.

B) Carbon dioxide levels in the atmosphere are rising.

C) Rising carbon dioxide levels in the atmosphere are causing the earth to get warmer.

D) The earth’s average temperature is presently getting warmer.

Three (3) of these statements are proven scientific facts (proven true). However, one (1) of these statements is more a scientific consensus (agreed upon as true), and thus more controvertible.

First you will need to figure out which three statements are scientific facts (proven true) and which one is the scientific consensus (agreed upon as true). Try to find specific data and references that support each of the statements above. You can use textbooks, internet searches or other references, but the references must be legitimate scientific sources. Do not use general encyclopedia-type websites as evidence (Wikipedia, Encyclopedia Britannica, etc,) or organizational web sites (USGS, EPA, etc.). (You may however find links or references to appropriate scientific articles at some of these organizational sites!) Try to find original scientific papers that have been peer reviewed. Do not reference non-peer reviewed books.

You will need to submit 1) a document listing each of the four statements, 2) your determination on whether each statement is proven true (FACT), or agreed upon as true (CONSENSUS), 3) the evidence that you have found supporting your determination for each statement, and 4) the reference or link that you used to support your determination.

Explanation / Answer

Answer:

It is true that earth's temperature is getting warmer since last few decades, reasons are many which are also get proved scientifically. There are number of reasons which are responsible for the hike earth's temperature, which are discussed as follows;

First of all list the sentences which are scientifically proved already, are as follows;

1: Carbon dioxide levels in the atmosphere are rising as a direct result of man-made CO2 emissions from the burning of fossil fuel. It is proved that burning of fossil fuels and man made activities responsible for the hike carbon dioxide which causes increases in earth's temperature.

Scientific Reference: Review paper - Atmospheric carbon dioxide and ocean, Nature , Volume 365, september 1993.

2: Carbon dioxide levels in the atmosphere are rising. Not only anthropogenic activities but also some natural activities which are responsible for the warming atmosphere such as volcanic eruption etc.

Scientific Reference: RISING ATMOSPHERIC CARBON DIOXIDE: Plants FACE the Future; Annual Review of Plant Biology, Vol. 55:591-628 (Volume publication date June 2004)

3: Rising carbon dioxide levels in the atmosphere are causing the earth to get warmer. The warming of atmosphere due to the entrapment of carbon dioxide in atmosphere.

Scientific Reference: Irreversible climate change due to carbon dioxide emissions, Author Affiliations

Contributed by Susan Solomon, December 16, 2008 (received for review November 12, 2008)

4: The earth’s average temperature is presently getting warmer: This sentence are under current research.

Scientific Reference: How will Earth's surface temperature change in future decades?, First published: 15 August 2009. Geophysical research letter.

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