In regards to photovoltaic cells found in solar panels scientists are researching types of batteries to store the energy in when it is not in use. what is the best explanation of the energy being conserved and transferred?

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

Arepair man charged $93.06 the price included 2 hours of labor and 40 service charge how much does the repairmen charge per hour for labor?

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi