| biology |
the science that studies the growth and life processes of living things. |
| ensure |
to make certain; cause to be a certainty. |
| examination |
a test of skill used to see how much a person knows or can do. |
| gasoline |
a liquid that burns, used mainly as fuel for engines. Gasoline is made from petroleum. |
| medicine |
a drug or other substance used to treat a disease, injury, pain, or other symptoms. |
| occasion |
an event or the time at which it happens. |
| polish |
to give a shiny surface to. |
| publish |
to prepare and bring out for sale for the public to read. |
| scoot |
to go with quick, sudden movements. |
| scurry |
to move quickly or in a hurried way. |
| slavery |
the owning of people by other people; bondage. |
| sober |
not drunk; not intoxicated. |
| species |
a group of living things that naturally produce young with other members of the same group but not with those of other groups. |
| tend1 |
to be likely; usually do. |
| unfold |
to open or spread out from a folded condition. |