Across
- 1. The parts of a habitat that are living, or were once living
- 4. the distance in degrees north south of the equator
- 7. A push or pull, affected by strength and direction
- 8. coal, oil, natural gases, and trees are all examples of biotic resources
- 10. The transfer of heat by the movement of a fluid
- 12. A species that influences the survival of many other species in an ecosystem
- 14. instrument used to measure relative humidity, using two thermometers, one wet-bulb and one dry-bulb
- 17. clouds that look like fluffy, rounded piles of cotton
- 18. one organism benefits and the other is unaffected
- 20. The series of changes that occur in an area where no soil or organisms exist.
- 22. A change in velocity, an increase or decrease in speed or a change in direction
- 23. A diagram that shows the amount of energy that moves from one feeding level to another in a food web
Down
- 2. The force exerted on objects when their surfaces rub against each other
- 3. a species that could become endangered in the near future
- 5. The temperature at which condensation begins
- 6. A relationship between two organisms of different species where one benefits and the other is harmed
- 9. the transfer of thermal energy from a hotter/warmer object to a cooler object
- 11. Species that are carried to a new location by people
- 13. density The number of individuals in an area of a specific size
- 15. transfer of heat through direct contact
- 16. A characteristic of a moving object that depends on both the mass and the velocity of the object
- 19. zone The ocean zone where you would find the barnacles, sea stars, and other organisms tightly attached to rocks? intertidal zone
- 21. An instrument used to measure precipitation