click below
click below
Normal Size Small Size show me how
S science 7th
7th grade science
| Question | Answer |
|---|---|
| adaptation | structure or behavior that helps an organism survive |
| evolution | a change in a species over a long period of time |
| fossil | remains of something that lived a long time ago (10,000 years old) |
| mutation | a change in genes that can be good or bad |
| sediment | crushed stone or sand |