Across
- 1. the chemicals that were used in aerosols that harmed the ozone layer—have been banned
- 4. leaving stalks of old crops on the field to get plowed under-Shades the soil- water retention in the soil
- 17. alternating crops every year to maintain nutrients
- 19. the O3 chemical that is good up in the atmosphere but can be bad if created low to the ground
- 20. people moving OUT of an area
- 22. using a resource over and over so new products don’t have to be made
- 23. coral ____ is a concern as it is killing coral reef areas. The water is too hot and the coral animals expel their algal partners and the coral dies off
- 24. pollution released into the air
- 25. rain that is acidic due to air pollution
- 27. giving time for resources to replenish and recover
- 28. ____ ____ released from factories and industries can get into the water and bind to fish tissues. If we eat these we can get sick. The most notable ones are mercury and lead
- 29. this is considered a pollutant to water if it washes into a water source and covers animals, nests, or clouds the water and doesn’t allow photosynthesis. It can also carry fertilizers and pesticides
- 33. when populations are so large that they increase rapidly
- 35. in this type of pollution you KNOW where it is coming from
- 39. this causes hotter soils and loss of plant diversity. Can cause more erosion also
- 41. restoring land to its original natural ecosystem is called land _____
- 43. places where human garbage is dumped
- 44. pipes in landfills allow gases to escape from deep in the trash as bacteria and fungi are going through the process of this
- 45. these are organisms that are brought to a new area that is not their natural habitat. The survive by taking food and space resources away from what is already there naturally
- 46. a toxic gas that is emitted by rocks- you need to be aware if you have a basement or a lot of stone in your house
- 47. the logging practice where they cut down everything
- 48. this in the water is becoming a big problem. It is found in all the world’s oceans. From big pieces to micro pieces
Down
- 2. thick brown haze caused by trapped chemicals reacting with sunlight low to the ground
- 3. using less of a resource so it lasts longer
- 5. this many kilometers from a coast line belongs to the country of that coastline- all resources are theirs
- 6. every living thing requires ____ to live so we must be sure we keep it clean and fresh and available!
- 7. this is “farming” of fish and sea life to produce a high population. Usually done to have resources for restaurants.
- 8. _____ pollutants such as chemicals in your house can be damaging to water sources if leaked or spilled on the ground
- 9. contamination of Earth’s air, water or land
- 10. this is taking away trees due to mining in the area, or development or logging. Will cause increased soil erosion
- 11. the largest population an area can support
- 12. this is considered a pollutant as animals cannot live in water areas where the temperature is unnatural
- 13. the logging practice where they leave some trees to maintain a habitat for organisms
- 14. in this type of pollution, there is more than one source adding to it
- 15. what the progress in the 1700’s was called when factories started to get built
- 16. sustainable _____ management is very important as we are very dependent on trees as a natural resource
- 18. deforestation and building on wetland decreases the land available and the _____ of animals
- 19. this substance in the water is very difficult to clean up- it coats the tissues of water organisms and the shoreline plants
- 21. when the population exceeds the resources in an area we say we have reached a state of ______
- 26. things human use from Earth that are not man made
- 30. deforestation can lead to this- the soil eroding and drying out
- 31. a toxic gas emitted from unburned natural gas- you can buy a detector to put in your house- it has no smell and can be deadly
- 32. these areas are important for commercial and recreational fisheries. It is the place where juvenile sea life “grows up”
- 34. this is when farm land is farmed year after year- it causes nutrient depletion in the soil
- 36. people moving IN to an area
- 37. overfishing and overhunting can cause species to become ____
- 38. the term used to describe how urban areas spread (because of population increase) out and take over rural areas
- 40. over use of these by farmers causes a decline in important insect populations
- 42. airpollution inside is sometimes called this- do to people with allergies to things being affected