How do greenhouse gasas make it possible for humans to live on earth?

Answer 1

Paracelsus, the father of toxicology stated "All things are poison and nothing is without poison, only the dose permits something not to be poisonous"

He could have been talking about greenhouse gases.

The presence of some water vapour and some carbon dioxide in our atmosphere allows the Earth to retain soar warmth. Without them we would be iike Mars - very cold. However, too much of this good thing could retain too much heat, like Venus, and we'd bake.

The present levels are being tipped towards the "too much" by man-made emissions, reduced uptake of carbon dioxide by forests and loss of carbon contained in soils. In addition methane (a potent greenhouse gas) is being released from the permafrost.

Answer 2

Greenhouse gases help regulate the Earth's temperature by trapping heat from the sun in the atmosphere, creating a greenhouse effect. This process keeps the planet warm enough for humans and other organisms to survive. However, human activities have increased the concentration of greenhouse gases, leading to climate change and its associated challenges.