What is one problem with production of coal? A. It is so expensive that manufacturers do not always make a profit.
B. It uses large amounts of water.
C. It produces CO2
D. It must be performed at very high temperatures.

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems