14. True or False Change to Make True 1. Predators are abiotic factors that limit the size of prey populations 3. An ecosystem is a large region with plant and animal groups well adapted to the soil and climate of the region 4. The number of individuals living in a definite area is called population spacing F biotic 2. Groups of populations that interact with each other in s given area form a community True F biome F density

15. Completion 5. Environmental factors that include soil, sunlight, air ______ 6. Made of overlapping food chains ___________ food web population 7. Number of one species in an area _________ 8. Sometimes environmental factors reach a carrying ___________ capacity abiotic

16. Completion 9. A relationship in which one species benefits at the expense of another ________ 10. Role of an organism in an ecosystem niche parasitism

17. Completion select best choice 11. Groups of populations that interact with each other in a given area form a__________ community , niche 12. The struggle among organisms to obtain resources for reproduction and survival is called ___________ competition , capacity

18. Completion select best choice 13. A symbiotic relationship that benefits both species is called __________ commensalism, mutualism 14. The physical location where an organism lives is its ______ habitat ,population

19. Matching A. Living things grow and develop A B. Living things respond C. Living things maintain homeostasis D. Living things use energy E. Living things are organized F. Living things reproduce F 15. __ The fish in the classroom aquarium have baby fish 16. __ Your neighbor’s puppy has grown into a large dog 17. __ Your friend has 2 brothers and a sister F

20. Match each item with the correct statement A. Ecology B. Limiting factor C. Carrying capacity Producers E. Nitrogen fixation F. Energy G. Biotic factors Predation I. Air J. Abiotic factors K. Mutualism L. Water 18. ___ symbiotic relationship that benefits both species 19. ___ living organisms 20. ___ limits the number of organisms in an environment D. H. D. D. D. K G B

21. Match each item with the correct statement A. Ecology B. Limiting factor C. Carrying capacity Producers E. Nitrogen fixation F. Energy G. Biotic factors Predation I. Air J. Abiotic factors K. Mutualism L. Water 21. ___ The 1 st level of the food chain 22. ___ One organism kills and feeds on another organism. 23. ___ the largest number of organisms that an environment can support and maintain D. H D. D. D C

22. Match each item with the correct statement A. Ecology B. Limiting factor C. Carrying capacity D. Biotic factors E Predation 24.___number of individuals in a population 25.___number of individuals that occupy a definite area population 28 ___ arrangement of organisms in an area E C A 26.___maximum rate of population increase 27.___reduces the number in the population D B