| A | B |
|---|
| Density independent limiting factors | are factors that affect all populations , big or small, in similar ways. The size of the population is not affected by these factors but these factors can cause a population to decrease. These kinds of factors are unusual weather, natural disasters, seasonal cycles and certain human activities like pollution, damning rivers and development which cuts down trees. All these things can affect a big or small population and cause the same effect. |
| CFC ‘s are | chlorofluorocarbons. |
| chlorofluorocarbons | are gases that humans created that were used in propellants in aerosol cans. |
| Global warming | is the increase in the average temperatures on Earth. |
| Biodiversity | is short for biological diversity which means the sum total of the variety of organisms in the biosphere |
| endangered species | species whose population size is rapidly declingin and will become extinct if the trend continues |
| Species diversity | number of different species in the biosphere |
| Sustainable development /practice | is using natural resources at a rate that does not deplete them. |
