The energy available to producers in an energy pyramid is 200 kilocalories. Approximately how much energy is used by the producers to make food, grow, and reproduce? 20 kilocalories

200 kilocalories

180 kilocalories

120 kilocalories

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

What occurs to the cell during mitosis