Across
- 3. , the study of organisms and how they interact with the environment around them.
- 5. factor , living things within an ecosystem
- 6. factor , a non-living part of an ecosystem that affects the environment.
- 7. , the practice of living as a parasite in or on another organism.
- 9. species , an organism that has a disproportionately large effect on its environment relative to its abundance, and is critical to the survival of other species in an ecosystem.
- 11. level , the position of an organism in a food chain or food web
- 14. , an organism that cannot produce its own food and must eat other plants and/or animals to get energy.
- 15. web , a system of interlocking and interdependent food chains.
- 16. , when chemicals, particles, or other materials are released into the environment, harming the organisms there.
- 17. , the process of organisms leaving a population and moving to a different habitat.
- 18. , an organism that eats other plants or animals for energy and nutrients.
- 22. resource , a natural substance that is not replenished with the speed at which it is consumed.
- 25. curve , a graph that measures the proportion of individuals in a given species that are alive at different ages.
- 26. succession , a type of ecological succession that occurs when organisms colonize a new area for the first time.
- 31. , the variety of life in the world or in a particular habitat or ecosystem.
- 34. , the community of plants and animals that occur naturally in an area, often sharing common characteristics specific to that area
- 35. , when an organism moves to a new area and establishes a permanent home.
- 37. resource , energy that comes from a source that won't run out.
- 38. capacity , is the maximum number of organisms of a species that can survive in a specific environment, given the available resources
Down
- 1. niche , the role and position of a species in its environment.
- 2. , a mutually beneficial relationship between different people or groups.
- 4. , the long-term, predictable atmospheric conditions of a specific area.
- 5. , is the process by which substances, such as pesticides or heavy metals, increase in concentration as they move up the food chain
- 8. , an association between two organisms in which one benefits and the other derives neither benefit nor harm.
- 10. , a type of symbiotic relationship where all species involved benefit from their interactions.
- 12. species , species that are the first to colonize newly created environments or recently disturbed environments during the processes of primary succession and secondary succession, respectively.
- 13. , an organism that creates its own food or energy.
- 17. footprint , a measure that indicates how much resources from the environment are required to support a specific way of life or business.
- 19. , the natural home or environment of an animal, plant, or other organism
- 20. succession , a previously occupied area is re-colonized following a disturbance that kills much or all of its community.
- 21. , the total quantity or weight of organisms in a given area or volume.
- 23. , a biological community of interacting organisms and their physical environment.
- 24. cycle , the natural process by which chemical elements and compounds move between living organisms, the atmosphere, and the Earth's crust.
- 27. density , the average number of individuals in a population per unit of area or volume.
- 28. pyramid , is a diagram that shows the flow of energy
- 29. , a group of different species that live together in a common location and interact with each other.
- 30. factor , anything that constrains a population's size and slows or stops it from growing.
- 32. an ecosystem's trophic levels
- 33. , organism that breaks down dead organic material.
- 36. , an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.