s biofuels are a viable alternative to fossil fuels? If not, what are some other alternatives.?

(3) Based upon what we have read, all of the following are potential negative effects of our concentration on growing biofuels (e.g. corn for ethanol production) except: (a) Disappearing Brazilian rainforest used for growing corn (b) Destruction of natural petroleum reservoirs beneath the Alaskan National Wildlife Reserve (c) Decreased resources to fight famine in Africa and other impoverished areas in the world (d) National focus to find or develop practical resources for future energy production

AP Environmental Science Primary Productivity Problems   Net Primary Productivity efficiency can be calculated for terrestrial producers when values for insolation energy, respiration loss and gross productivity are known. Use the equations below to answer the following problems:   Net Primary Productivity = Gross Productivity – Respiration Loss   Efficiency = .          NPP           . X 100                      Insolation Energy   In a rice paddy in Southeast Asia, the insolation energy is 6,000,000 calories/m2/day. The gross productivity of the rice is 0.012 grams/cm2/day, and the respiration loss is 20 percent. One gram of rice is equivalent to 1000 calories.   Calculate the net primary productivity of the rice.               Find the efficiency of photosynthesis by the rice.   Could you mostly help me set it up and find it? So I can learn how to do it.

What are natural ways that carbon can be taken out of the atmosphere Respiration and ocean uptake Photosynthesis and ocean uptake Respiration and extraction Extraction and photosynthesis

Answer clearly

Only #4

The biomass available for consumption by the herbivores and decomposers is called as what?

what are the methods for the Agricultural residuls (biomass) to be an energy, specifically the bioenergy?

Which fraction of phosphorus is available for photosynthetic organisms to directly uptake and use? Organic phosphorus in detritus Absorbed phosphorus in clay Phosphorus in minerals in rocks Soluble phosphorus in water

Are there different types of use for fossil fuels? If yes, what are the differences?