| Term | Definition |
|---|
| natural resources | a material found in nature that is used by living things |
| conservation | the saving of resources by using them carefully |
| observe | to notice or view things carefully |
| offspring | a person or animal's baby or child |
| water cycle | the movement of water from Earth's surface into the air and back to the surface again |
| weathering | the process by which rock is worn down and broken apart |
| organism | a living thing such as a plant or animal |
| photosynthesis | the food-making process of plants |
| physical change | a change to matter in which no new kinds of matter are formed |
| physical properties | anything you can observe about an object by using your senses |
| pollution | the act of harming the environment, polluting or contaminating the environment |
| predator | an animal that hunts another animal for food |
| prey | an animal that is hunted by a predator |
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