Yes, but not animal life.
Without oxygen only the anaerobic bacteria would be able to live.
Humans would die of cold. A little carbon dioxide keeps the earth warm, through the greenhouse effect.
Without carbon dioxide, no green plant on earth would ever be able to exist, since all green plants breathe in carbon dioxide, just as we breathe in oxygen.
There is no insulating LAYER of Carbon Dioxide round the Earth. The Carbon Dioxide is mixed up with the Oxygen and Nitrogen in Earth's atmosphere and is not present in the atmosphere as a layer. If the absolute amount of Carbon Dioxide in the atmosphere increases, the Earth would get warmer.
No!! Insects are needed for us to survive on earth! They help create the carbon dioxide on earth.
There is no insulating LAYER of Carbon Dioxide round the Earth. The Carbon Dioxide is mixed up with the Oxygen and Nitrogen in Earth's atmosphere and is not present in the atmosphere as a layer. If the absolute amount of Carbon Dioxide in the atmosphere increases, the Earth would get warmer.
there would be no oxygen on earth.
levels of oxygen and carbon dioxide would decrease and levels of carbon dioxide would increase.
If there were no plants on Earth, there would be no alternative life. This is because of Photosynthesis; the plants breath in the Carbon Dioxide and breath out Oxygen; which we need to live, and would die without.
Carbon Dioxide do exist in universe in places other than Earth.
The carbon Dioxide levels in the Earth's atmosphere are rising.
Not a lot! Early life transformed the atmosphere; removing much of the carbon dioxide, so without life Earth would probably have an atmosphere and environment like Venus.
We would die without carbon dioxide - carbon dioxide is essential to the production of oxygen! Trees and green plants ingest carbon dioxide from the atmosphere; plankton and green algae from the salt water (including ocean) or fresh water they live in. These green things produce oxygen as part of the process of photosynthesis. Oxidation produces some carbon dioxide, too, but the net effect is to give off less carbon dioxide, and produce more oxygen than they use. Carbon dioxide in the atmosphere forms part of the greenhouse effect, which, if its levels are not disturbed, keeps the earth pleasantly warm enough for life.