ecosystems

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Across
  1. 5. a group of organisms of the same species living in a community is called a population.
  2. 7. the biosphere is where all life as we know it exists
  3. 9. ecosystems Marine ecosystems are the largest of Earth's aquatic ecosystems and are distinguished by waters that have a high salt content.
  4. 12. Organisms cooperate with each other to ensure their survival.
  5. 17. A relationship between 2 organisms where both organisms benefit.
  6. 18. The organism that does the killing in predation
  7. 21. The organism that is killed in predation
  8. 23. web A food web is a number of food chains combined
  9. 25. A relationship where 1 organism (the parasite) lives in or on the body of another organism (the host). The parasite benefits but the other is harmed.
  10. 26. Is a close and physical relationship between two organisms of different species.
  11. 27. ecosystems a terrestrial ecosystem is a land-based community of organisms and the interactions of biotic and abiotic components in a given area.
  12. 28. Living things such as plants, animals, protists and bacteria.
Down
  1. 1. An organism is anything living. For example, fish, dogs, birds.
  2. 2. ecosystems an aquatic ecosystem is an ecosystem in a body of water
  3. 3. chain A food chain shows the feeding relationships between organisms. a food chain always begins with a producer
  4. 4. Occurs when organisms fight each other to use the same limited source.
  5. 6. Members of the same species produce offspring, ensuring that the species will survive.
  6. 8. Every living organism has particular needs, organisms live only where these needs are met by their resources available in the habitat.
  7. 10. ecosystems A type of ecosystem with freshwater.
  8. 11. A group of organisms living together in an ecosystem is called a community.
  9. 12. A relationship where one organism benefits and the other is unaffected.
  10. 13. If two animals eat the same sort of food and live in the same habitat, they must compete for their food.
  11. 14. The producer is the thing that starts the food chain, it gets eaten by the first-order consumer.
  12. 15. ecosystems natural ecosystems are purely natural and their formations are not in any way influenced by human activity.
  13. 16. An interaction in which 1 organism kills and eats the other
  14. 19. Is a system formed by organisms interacting with each other and their nonliving surroundings in a balanced way.
  15. 20. ecosystems an artificial ecosystem is a human-made system of plants, animals, and people living in an area together with their surroundings
  16. 22. Animals that need to consume other animals and plants.
  17. 24. non-living things such as water, soil, air and light.