What % of sunlight reaching the Earth is converted to chemical energy by photoautrophs such as plants and algae? O -10% O -0.1% O -1% O -0.01%

What is the nitrogen cycle?  (This question is asking for a general overview)

This is a list of carbon stores (different forms that carbon is stored in). Match each carbon store with the right "sphere". Each is used once. carbon dioxide, methane gas, biosphere hydroflurocarbons disolved carbon dioxide, carbonic acid, bicarbonate, carbonate ions geosphere O Fossil Fuels, soil, rocks carbon found in biological macromolecules O (proteins, carbohydrates, lipids and nucleic acids) atmosphere hydrosphere I stv MacBook Air 80 DII DD F2 F3 F4 F7 Fa F9 F10 F11 %23 $ % & 3 6. 8 9 E R Y P D F G H. K L C V .. .. ト 的4

What is the primary source of anthropogenic sulfur dioxide and why do you think that in the Philippines there are so much problem related to sulfur dioxide emission?