scince biology

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Across
  1. 2. the whole number of people or inhabitants in a country or region.
  2. 6. factorA limiting factor is anything that constrains a population's size and slows or stops it from growing
  3. 7. community, in biology, an interacting group of various species in a common location
  4. 8. Competition is an interaction between organisms or species in which both require a resource that is in limited supply.
  5. 11. an applied science that focuses on protecting the Earth's biodiversity and maintaining natural ecosystem
  6. 13. an organism that derives the organic compounds and energy it needs from the consumption of other organisms; a heterotroph:
  7. 14. pyramidAn energy pyramid is a model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem.
  8. 15. a person, company, or country that makes, grows, or supplies goods or commodities for sale
  9. 19. The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems,
  10. 20. Adaptation is the evolutionary process whereby an organism becomes better able to live in its habitat or habitats
  11. 21. a relationship in which both species are mutually benefited.
  12. 23. levelTrophic level is defined as the position of an organism in the food chain
Down
  1. 1. web
  2. 3. Photosynthesis is the biochemical pathway which converts the energy of light into the bonds of glucose molecules.
  3. 4. A decomposer is an organism that decomposes, or breaks down, organic material such as the remains of dead organisms.
  4. 5. a close, prolonged association between two or more different biological species
  5. 7. the long-term, predictable atmospheric conditions of a specific area
  6. 9. Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP
  7. 10. a biological interaction where one organism, the predator, kills and eats another organism, its prey.
  8. 12. a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter.
  9. 14. An ecosystem is a community of living organisms (plants, animals and microbes) in a particular area.
  10. 16. the community of plants and animals that occur naturally in an area, often sharing common characteristics specific to that area.
  11. 17. a relationship between the two living species in which one organism is benefitted at the expense of the other
  12. 18. A habitat is the natural home or environment of a plant, animal, or other organism.
  13. 22. chainA food chain is a sequence of organisms in an ecosystem that eat and are eaten by other organisms