How is stratospheric ozone created? 1 Ozone is formed in when sulfur and nitrogen oxides combine with water in the atmosphere.

2 Ozone created from NOx and VOC gases rise from low altitudes into the stratosphere and form the ozone layer.

3 Radiant energy from the sun breaks apart oxygen molecules freeing single oxygen atoms that recombine into ozone.

4 When ultraviolet radiation passes through a depleted ozone layer it acts on oxygen at ground levels creating ozone.

Rank the three variables in terms of how strongly they affect the "species" composition of the bacterial communities. place the variable with the weakest effect on the left and the variable with the strongest effect on the right.

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?