Across
- 4. Organ, A body part that does not seem to play a role in the body functions of an organism; an organism can survive without it
- 5. Extinction, Extinction of a large number of species within a relatively short period of geological time; thought to be due to factors such as a catastrophic global events or widespread environmental changes that occur too rapidly for most species to adapt
- 7. The variety of life in the world or in a particular habitat or ecosystem
- 8. Structures, Body parts with similar function but not a similar structure
- 9. Any differences (between cells, individuals, or groups of individuals) that are caused either by genetic or environmental factors
Down
- 1. Structures, Body parts of different organisms that have similar structure but not necessarily a similar function
- 2. Change over time; the process by which modern organisms have descended from ancient organisms
- 3. Selection, Process by which organisms that are most suited to their environment survive and reproduce most successfully; also called “Survival of the fittest”
- 6. The process of change where a species becomes better suited to its environment