| A | B |
|---|
| cross--pollination | when pollen is moved from one plant to another |
| gene | a part of a cell that controlls a trait in a living thing |
| genetic engineering | adding genes in a cell to give an organism new traits |
| pesticide | a substance used to kill pests |
| pollen | powdery grains needed by plants to make seeds |
| vaccine | medicine that protects people from a disease |
| adaptation | special trait that helps a plant or an animal survive in its environment |
| bamboo | tree-like grass with hard stems |
| conservationist | a person who protects wild places, plants, and animals |
| endangered | at risk of dying out |
| nutrient | substance a living thing needs for energy and growth |
| poaching | killing an animal illegally, usually to eat or sell |
| reserve | land set aside for animals |
| archaeologist | a scientist who learns about ancient people by studying what they left behind |
| artifact | something made by humans |
| cliff | a steep wall of rock, earth, or ice |
| kiva | a round underground room often used for religious ceremonies or religious gatherings |
| mesa | a landform with a flat top and steep sides |
| sandstone | a rock formed from grains of sand |
| yucca | a plant with long stringy leaves that grows in the Southwest |
