Group3

= Group 3 =

**Ecosystems**
Aquarium Notes - Materials that need for aquarium- water, gravel, elodea, duckweed seeds, bottle, papertowel, algea, dropper, spoon, lens, ruler, and cup. The procerus to make the aquarium is- 1. Wash the gravel so it doesn't make the water fogie 2.Put the gravel in the bottle 3. Put 3 cup of water 4. Get the 3 plants from your teacher 5. Look at the plants with your hand leads. 6. Put the plants one by one in the aquarium 7. Look at your aquarium every day to see what changed.

Respiration helps organisms get energy. In the daylight, organisms that have chorphyll such as plants, algae and some bactreia, can use the sun's energy. It makes a carbon- dioxide. We call this photosynhesis. Through, photosynthesis, these organism release much more oxygen than they take in. The animals which needs oxgen to breathe is a fish, snails, and tadpoles. Aquatic organisms such as duckweed, elodea, and algae. Some aquatic organisms provide homes and protection for thiner organisms and baby animals.These creature neatle in the leaves and stems of underwater plants where they can live safely. 1. Elodea can float on the top or plants its roats. 2.If a piece of Elodea falls into the water it will grow again 3. The Elodea helps other plants crowd even if they live on the water or under water


 * where there is water there are algae:**Thousands of kinds of algae live in every wet environment you can think of they also come in a rainbow of colars:green,golden,brown and red.
 * Duckweed:food for fowl**:Duckweed is a tiny floating plants.It usually grows on the surfaces of ponds,lakes,and slow-moving streams.
 * Make new fronds:**Duckweed rarely flowers and it almost never does out of nature.

1) What is an ecosystem?
Living things in a paticular area and parts that affect them. A relationship and thier surroundings.

2)How are living and non-living things connected to one another?
The cycle. First the sun gives energy to the plants,next a mouse eats the plant,then the cat eats the mouse, then the dog eats the cat, and then the dog dies and gives norishmaent to the soil.

3) How does the use of its resources affect an ecosystem?
cutting down trees, bulldozers daming rivers, using water from the water system, and killing animals.

4) How are resources used by different groups?
Food, medicine, and other materials. Trees make clean air. Wetlands clean water.

5) How can our choices affect ecosystems?
Our choice to recycle paper can save us from cutting down trees. Manage, Protect, and Conserve.

6) Why do some people think it is important to protect ecosystems?
If you take something out the ecosystem you can upset the balance of the ecosystem.