Across
- 3. All organisms within a habitat do this; caused by limited resources.
- 7. Darwin's theory of evolution is said to occur by n _ _ _ _ _ _ selection.
- 8. A consequence of global warming. A change that is occurring on a global scale. Examples include changing weather patterns and increasing frequency of natural disasters.
- 9. Relationships between organisms in an ecosystem can be shown in a food _ _ _.
Down
- 1. Organisms that can breed to produce fertile offspring are said to belong to the same s _ _ _ _ _ _.
- 2. Many species on Earth have given humans this to help treat disease (e.g. aspirin comes from a plant).
- 4. When organisms adapt and survive to reproduce, they pass on their advantageous genes to their o _ _ _ _ _ _ _ _.
- 5. Organisms that are unable to adapt to changes in their environment will go e _ _ _ _ _ _.
- 6. Variations of genes; begins with the letter 'a'. The more of these are in an ecosystem, the more biodiverse it is.