The number of living things able to survive in the biosphere will decrease
If by gas you mean an atmosphere, there are no planets with an atmosphere anywhere similar to Earth.
There was a lot of methane.
Earth has an ozone layer in atmosphere. It is present in the stratospheric region. Other planets which have oxygen in their environment might have ozone.Some planets like earth do. Others might have.
No, the Earth's gravity is a fundamental force that arises from its mass. Gravity is what keeps everything on the Earth's surface and holds the atmosphere in place. It would require a significant change in the Earth's mass or a cataclysmic event to alter or eliminate its gravitational pull.
Yes, they do have but only a little much. Ozone and air pollution might be indirectly related.
pollution and many other things that affect our earth
The color depends on where, when, how and with what you are looking at the atmosphere. For example, astronaut might see it as "clear" but people watching a sunset might see it as more orange/red.
The answer is simply this. Gas causes so much pollution that it starts to float up to the atmosphere. As most of us would know, this causes damage to the Earth's atmosphere. If you use less gas, it causes less damage to the atmosphere. It won't do much, though, considering that volcanoes erupting alone give off more pollution than humans do, so really using less gas does very little difference. Reducing, reusing, and recycling many things actually might even help more than using less gas alone would do.
An asteroid impact can change Earth's climate by releasing dust and debris into the atmosphere, blocking sunlight and causing a temporary cooling effect. Additionally, the impact can also release gases like sulfur dioxide, which can lead to global warming by trapping heat in the atmosphere. Overall, an asteroid impact can disrupt the balance of Earth's climate system and lead to significant changes in temperature and weather patterns.
Increased population over thousands of years could lead to deforestation for agriculture and urbanization, resulting in loss of biodiversity and habitat destruction. There could be increased pollution and waste generation, leading to reduced air and water quality. Climate change may also be exacerbated due to increased greenhouse gas emissions from human activities.
The atmosphere can be classified based on its temperature profile into distinct layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. These layers vary in temperature, composition, and characteristics, with the troposphere being the layer closest to Earth's surface and the exosphere merging into outer space.
You might mean nitrogen which is the colourless gas that constitutes about 3/4 of the earth's atmosphere.