| 1. extinct |
oxygen
in the form of molecules with three atoms, created by exposure of
oxygen to electrical discharge or ultraviolet radiation, having
a sharp smell, and being an effective oxidant for use in bleaching
and sterilizing. |
| 2. pollution |
the
natural environment of a plant or animal. |
| 3. ozone |
contaminating
material that pollutes. |
| 4. endangered
species |
the
continuous modification and adaptation of organisms to their environments
through selection, hybridization, and the like. |
| 5. poacher |
a
species of plant or animal that is in danger of becoming extinct. |
| 6. conservation |
a
haze caused by the effect of sunlight on foggy air that has been
polluted by vehicle exhaust gases and industrial smoke. |
| 7. evolution |
the
mass of gases surrounding the earth or any other celestial body. |
| 8. smog |
a
substance used to kill insects. |
| 9. habitat |
one
who illegally hunts on another's property. |
| 10. atmosphere |
no
longer existing, as an animal species. |
| 11. insecticide |
the
warming trend on the surface and in the lower atmosphere of a planet,
held by scientists to occur when solar radiation is trapped, as
by emissions from the planet. |
| 12. biosphere |
the
part of the earth and its atmosphere in which living organisms can
exist. |
| 13. greenhouse
effect |
the
act of preserving and protecting from loss, destruction, or waste. |
