biology review

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Across
  1. 3. an assemblage of different populations that live together in a defined area
  2. 5. the process through which heat is trapped near earths surface by substances known as "greenhouse gases"
  3. 7. an environmental condition that affects a population's size and growth rate regardless of the population's density
  4. 9. maximum population size of a species that an environment can sustain indefinitely, given the available resources like food, water, and shelter
  5. 13. describes how individuals of a species are spread out across their habitat, and can be either clumped, uniform, or random.
  6. 14. defined by patterns and averages over many years of temperature precipitation clouds wind and extreme weather events
  7. 15. the permanent movement of individuals of the same species into a population or habitat, increasing its size.
  8. 16. an organism that cannot produce its own food and must obtain nutrients by consuming other organisms or organic matter
  9. 18. the process of individuals leaving a population, habitat, or area to move to another
  10. 19. is the study of natures houses organisms based on energy and nutrients
  11. 20. an environmental factor that impacts a population's size and growth rate based on the population's density
  12. 21. all rocks on earth including continents and the ocean floor
Down
  1. 1. any living thing part of the environment with which an organism might interact
  2. 2. includes everywhere life exists.
  3. 4. an organism that produces its own food from inorganic substances, using light or chemical energy
  4. 6. consists of short-term changes in temperature precipitation clouds and wind from day to day minute to minute
  5. 8. any nonliving thing part of the environment sun light, heat, wind or water currents, soil
  6. 10. all organisms that live together in a place together with their physical environment
  7. 11. 3 biomes and describe them
  8. 12. organisms, also called autotrophs, that create their own food using energy from sunlight or chemicals through photosynthesis or chemosynthesis
  9. 17. all of the water, vapor, and ice on earth