Chlorofluorocarbons(cfcs) damage the ozone layer. where do these chemicals come from?

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian