Ecology Crossword #1a

3. Water at 4°C is at its _________, which means that water near the bottom of bodies of water should be this temperature
8. acidic gases and particles that stick to vegetation and soil
9. water’s polar structure allows it to dissolve inorganic nutrients and makes them accessible to organisms
10. an atom or group of atoms that can be charged negatively or positively
11. thermal property of water that rises when compounds are dissolved in it or lowers at higher elevation
12. water resists changes in ______ as a change from 98°C to 99°C uses less energy than a change from 99°C to 100°C _______ depends on energy, pressure, elevation, dissolved compounds, etc.
13. membrane that allows certain ions and molecules to pass through while restricting others
14. an aquatic environment characterized by a low pH
16. a process which requires energy to move ions or molecuels against their concentration gradient
17. this element interferes with a plants ability to take up nutrients and is released by excessive H+ in the soil
19. a fish can use this to match the density of the water and control its floating or sinking
20. resistance encountered by organisms moving through liquid, increases in cold water, decreases in warm water

1. thermal property of water that drops below 0°C when compounds are dissolved in it
2. a measure of how an aqueous solution will attract evenmore water, decreases (negative) with a higher solute concentration and is measure in MPa.
4. the amount of mass in a certain volume, increases in cold water, decreases in hot water, increases in saltwater, decreases in freshwater
5. a force of attraction between hydrogen and a negitive species
6. encompasses acid rain and snowfall
7. low pH can cause the loss of plant nutrients such as calcium, magnesium, and potassium from the soil
9. heat the amount of heat added in order to raise the temperature by 1°C
15. the upper limit of minerals in water, increases in higher temperatures
18. substances without charge, immiscible with water