The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird

Four types of motile cells in human body?

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

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms