BACKGROUND:

Students have learned that there are different types of environments, but mainly under two big divisions land and water. An environment in which an organism lives can be described by temperature, wind, and other physical components as well as the biological components.

The aquatic or water environment has many divisions including fresh, salt (marine), and brackish (fresh and salty) water. The land environment has many subdivisions also, including air, rock, sand, and soil. Some of the land environments must include being close to a source of fresh water.

PROCEDURE:

1. Make sure you go over the words with students and discuss each of the items before and after you give students their packets. You many want to include other pictures that students can classify.
     
   In this lab the students will look at their packets included in the module and try to determine if the organisms came from aquatic or land environments and then they will try to figure out why the organism lives in his particular environment.
     
2. Students should use their hand lens to observe the organisms. Instruct students to draw a picture of the type of environment in with the item comes from. If they think it is the marine environment, have them make a picture of the ocean.
     
3. The following background information on each of the components can help you give clues to the students.
     
   Branch: This is part of a tree. Trees are adapted to the land environment. They can get their nutrients and water from the soil, and then transport them through the tree.
     
   Clams: Live in the marine environment. The shell helps protect clams from organisms that eat them and to keep them clean from mud in which they live. Clam shells also have different shapes that help them burrow more efficiently.
     
   Moss: A land plant that needs to be wet all the time with fresh water. Notice that the roots are small.

   Mammal: (Plastic Model) Has a backbone that supports its body while walking. Legs are present only on land mammals so they can walk.

   Seaweed: Present in the water environment, usually with gas bubbles to help it float. There is no need for roots. Many seaweeds are green, but some are red or brown. They are all able to make their own food.

   Coral: Live in the marine environment, usually in shallow water. Eat small detritus that falls on tentacles. Each hole is an individual organism.
     

4. Space has been left on the chart if you wish to add additional organisms for the students to examine.

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