Biology - Topic 4

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Across
  1. 1. All alleles of the genes present in a population
  2. 3. Kingdom that are multicellular eukaryotes that are heterotrophs
  3. 5. Organism which is specialised to suit its environment
  4. 6. Type of adaptation which we can observe
  5. 7. Number of species present in a given habitat
  6. 8. Narrow fluid filled channels
  7. 10. Makes the cell walls water proof and stronger
  8. 11. Change in allele frequencies over time
  9. 13. Type of classification
Down
  1. 2. How organisms change over time to adapt to their changing environment
  2. 4. The way an organism exploits its environment
  3. 9. Type of cell that is full, all its content still intact
  4. 12. A change in allele frequency in a population over time