Across
- 4. - the process by which living things produce "offspring" (babies or new plants)
- 6. - an instrument used to measure air pressure, which helps scientists predict if the weather
- 8. - when wind, water, or ice drop rocks or soil in a new place
- 10. - how a living thing keeps its internal environment stable
- 12. - the giant pieces of the Earth’s crust (tectonic plates) that shift and move
Down
- 1. - the layer of gases that surrounds the Earth, held in place by gravity
- 2. - when a gas (like water vapor) cools off and turns back into a liquid
- 3. - The powerhouse of the cell; tiny parts inside a cell that turn food into the energy the cell needs to work
- 5. - a solid that forms and falls out of a liquid during a reaction
- 7. - a group of stars that form a recognizable pattern or shape in the sky
- 9. - a close relationship between two different species where at least one of them gets something they need to survive
- 11. - the set of instructions you follow in order to complete a task or an experiment correctly