Across
- 2. fairly large organisms that lack a spinal column such as worms, snails, and larvae of flies, dragonflies, etc.
- 3. the control and regulation of waste
- 6. To make harmful substances harmless
- 7. sediments suspended in water which cause the water to be unclear or cloudy
- 11. the water that is above ground in streams, lakes, rivers, and ponds
- 16. a nonliving part of the environment
- 19. the science of cultivation, maintaining, and developing forests
- 20. a stream of water that feeds into a larger stream, river, bay or ocean
- 22. feature of the Earth’s surface attributed to natural causes
- 23. water from rainfall and the melting of ice that runs along the ground.
- 24. all the biotic communities that live in an area together with the abiotic factors in the environment
- 26. a measure of the dissolved salts in a sample of water
- 27. water contained in aquifers underground in the porous or jointed bedrock
- 29. an area of high elevation that separates one watershed from another
- 30. the shape of a land surface, showing the positions and changes of elevations of the land such as mountains, valleys, and rivers
- 33. the carrying away of weathered rock sediments and soil by weather and water; a natural process where soil is lost and transported
Down
- 1. alternate rising and falling of the surface of the water, and the area that is affected by this water level change
- 4. passing through periodically from one region or climate to another for feeding or breeding
- 5. a measurement of water pureness
- 8. a region or area where water travels downhill and ultimately drains into a large body of water
- 9. substances needed by organisms for energy, growth, repair, or maintenance
- 10. a rising and overflowing of a body of water onto normally dry land
- 12. the environment in which a particular species lives
- 13. free O2 molecules in water; important for aquatic animal life
- 14. a region of water where a freshwater source meets salt water from the ocean
- 15. an ecosystem in which the roots of the plants are submerged under water at least part of the year (i.e. marshes, bogs, swamps, etc)
- 17. the mixture of fresh and saltwater
- 18. to take in or suck or swallow up
- 19. a plain built up by stream deposition
- 21. a living part of the environment
- 25. small particles (usually rock) that settle to the bottom of a body of water
- 28. a river and all of its tributaries
- 31. all living things (plants, mammals, bacteria, fungi, fish)
- 32. a measure of the acidity or alkalinity of a liquid or damp substance (such as soil) The pH scale ranges from 0 – 14: 0 is the most acidic, 14 is the most alkaline, and 7 is neutral
