Ozone is present in the stratosphere layer of earth's atmosphere, which is about 6 to 30 miles from the earth's surface.
It is very helpful as it protects the life on earth from the harmful ultraviolet rays that come from the sun.
It is harmful as well because when it is inhaled by humans it can damage the lungs and can cause various problems such as chest pain and respiratory diseases.
The ozone layer is depleted by the CFCs, as the UV rays of the sun breaks down the CFCs into chlorine atoms. These chlorine atoms react with ozone and deplete the ozone layer.
Answer:
The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell.
Explanation:
The future is unclear but a wild guess you would look at the height of his or her parents and then there parents and that might tell you the child's future height hope that this helps if not message me
The decomposers are at the end of the food chain..
Explanation:
Because, decomposers are the last orgainsms that depends and decomposes all other organisma in the food chain..