Across
- 3. Living organisms.
- 4. Organism that cannot synthesize the organic nutrients it needs and gets its organic nutrients by feeding on the tissues of other organisms.
- 5. Another term for consumer.
- 7. respiration Complex process that occurs in the cells of most living organisms, in which nutrient organic molecules such as glucose (C6H12O6) combine with oxygen (O2) and produce carbon dioxide (CO2), water (H2O), and energy.
- 8. Nonliving.
- 9. cell
- 11. Organism that uses solar energy (green plant) or chemical energy (some bacteria) to manufacture the organic compounds it needs as nutrients from simple inorganic compounds obtained from its environment.
- 12. consumer Organism that feeds only on primary consumers.
Down
- 1. gases Gases in the Earth's lower atmosphere (troposphere) that cause the greenhouse effect. Examples are carbon dioxide, chlorofluorocarbons, ozone, methane, water vapour, and nitrous oxide.
- 2. Organism that digests parts of dead organisms and cast-off fragments and wastes of living organisms by breaking down the complex organic molecules in those materials into simpler inorganic compounds and then absorbing the soluble nutrients.
- 3. Variety of different species (species diversity), genetic variability among individuals within each species (genetic diversity), variety of ecosystems (ecological diversity), and functions such as energy flow and matter cycling needed for the survival of species and biological communities (functional diversity).
- 5. Plant-eating organism. Examples are deer, sheep, rabbits, and grasshoppers.
- 6. cell Cell that does not have a distinct nucleus. Other internal parts are also not enclosed by membranes.
- 8. Another term for producer.
- 10. respiration Form of cellular respiration in which some decomposers get the energy they need through the breakdown of glucose (or other nutrients) in the absence of oxygen.