Burning alcohol for fuel is a very efficient process? Please select the best answer from the choices provided
1) Т
2) F

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

How does friction with the atmosphere affect the speed of an artificial satellite

What is the similarities and differences between bacteria and eukaryote?