| Acidification (n.) |
A change to the chemistry of the ocean. When carbon dioxide gas (CO2) enters the ocean and reacts with seawater it makes acid. |
| Atmosphere (n.) |
The envelope of air surrounding the earth or another planet. |
| Biodiversity (n.) |
The variety of life (animals and plants) in the world or an ecosystem. |
| Condense (v.) |
Change from a gas or vapor to a liquid. |
| Evaporate (v.) |
Change from liquid into vapor or gas. |
| Nanometers (n.) |
One billionth of a meter. |
| Overfishing (v.) |
Use up the stock of fish by too much fishing. |
| Particle (n.) |
A very small piece. |
| Pollution (n.) |
The presence or introduction of a harmful or poisonous substance into the environment. |
| Precipitation (n.) |
Rain, snow, sleet or hail that falls to the ground. |
| Substance (n.) |
A solid matter. |
