1. ancient plants and animals animals 2. consumers transpiration 3. water loss plants 4. relationship of organisms to their environment habitat 5. nitrogen-fixing bacteria rhizobium 6. energy converting pigment groundwater 7. producer chlorophyll 8. use of energy in food respiration 9. where an organism lives fossil fuel 10. stored in porous rock ecology

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

How do dying stars contribute to the formation of planets