Across
- 2. the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
- 5. A chemical process in which oxygen is used to make energy from carbohydrates (sugars).
- 7. having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid.
- 10. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
- 13. A chemical process in which oxygen is used to make energy from carbohydrates (sugars).
- 14. a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.
- 15. the long-term heating of Earth's surface observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.
- 16. the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
- 18. the source of energy for use and storage at the cellular level.
- 19. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
- 20. the process of moving molecules across a cellular membrane through the use of cellular energy.
Down
- 1. having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid.
- 3. the series of processes by which carbon compounds are interconverted in the environment, involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.
- 4. the biogeochemical cycle that describes the transformation and translocation of phosphorus in soil, water, and living and dead organic material.
- 6. denoting or relating to a solution having the same osmotic pressure as some other solution, especially one in a cell or a body fluid.
- 8. a microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.
- 9. the action of spreading the light from a light source evenly so as to reduce glare and harsh shadows.
- 11. movement of a solute from a region of high electrochemical potential on one side of the cell membrane to a region of lower electrochemical potential on the opposite side.
- 12. a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
- 17. a measure of the amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.