What other greenhouse gases are released when the organic matter of a natural Christmas tree decomposes?

"During this time, it has a positive impact on the environment, because it absorbs carbon from the atmosphere and nitrogen from the soil"

"Overall, your choice of Christmas tree has a relatively small impact on your annual carbon footprint."

"Transporting a tree can contribute to its overall carbon footprint"

"the biggest impact on the environment comes from production of artificial trees"

This text was published by BBC news

The text presents information about different effects Christmas trees have on the environment, as well as additional data to reinforce their arguments. They emphasize that you should take into account the reuse of artificial trees, and disposal of natural trees.

The purpose of this text is to inform about the environmental impact of Christmas trees. Also, to compare between the natural or artificial ones, giving facts for the reader to analyse.

Environmental experts, citizens concerned about the greenhouse effect, scientists studying the carbon footprint, and people reading a science magazine.

This text is a news report or article. Its type of language is formal and technical, presenting clear data on the subject.

"That can reduce its carbon footprint by up to 80..."

What can people do to decrease the environmental impact when buying a Christmas tree?