Automobiles are the leading cause of acid rain, the erosion of buildings and statues, the absence of nitrogen in the soil, carbon manoxide in the atmoshphere?

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

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

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution