Team+Crayfish+Forest+and+GPS

Dakota Lellock and Alex Farmery =Forest= The Forest floor is known as humus. It is made up of all the decomposing leaves. The humus provides food the stream organisms. The trees intercept the water and the forest floor absorbs water and holds it there until the water flows into the stream. Roofs and roads don't let water penetrate so it runs off mixing with other chemicals before joining a stream some chemicals like motor oil is bad for the environment and the animals living in them. Fungi, some Insects, and some bacteria will decompose the wood releasing the carbon dioxide that was used in making the wood.

=GPS= A GPS is a Global Positioning System and it shows position in longitude and latitude and also provides the time. With four or more satellites that orbit the earth the GPS will find your longitude and latitude. A GPS can find you almost anywhere unless you are inside or under trees. A fun activity to use a GPS for would be geocaching. Geocaching is when people hide a "cache" or little treasure anywhere in the world and they post the coordinates along with terrain difficulty and other activities in the area, including picnic areas and others.