Flow of Energy
Energy in most ecosystems originally comes from this source.
What is the sun?
Unlike energy, matter in ecosystems does this.
What is cycle?
Arrows in a food chain show this.
What is the direction of energy transfer?
A plant is placed in sunlight and given water daily. It grows taller after two weeks. This result supports the idea that plants need this condition to grow.
What is sunlight/water?
A diagram showing feeding relationships between many organisms is called this.
What is a food web?
Organisms that capture energy from sunlight and make their own food are called this.
What are producers?
Decomposers return nutrients to this part of the ecosystem.
This organism makes its own food and starts most food chains (think about the trophic level).
What is a producer?
Two identical plants are tested. One receives water daily. One receives no water. Only the watered plant survives. This result supports the claim that plants need this to survive.
What is water?
What trophic level receives the least energy?
What is the highest trophic level (consumers)?
Energy moves through ecosystems in one direction through structures like these.
When animals breathe out carbon dioxide, the matter moves into this part of the ecosystem.
What is the atmosphere?
An organism that eats producers is called this.
What is a consumer?
A student grows one plant in soil and one plant in water with nutrients. Both plants survive. This result supports the claim that plants do not always need this to survive.
What is soil?
If a disease reduces the rabbit population, what happens to the fox population over time?
What is decrease?
Energy decreases at each trophic level because some energy is lost as this.
What is heat?
Plants use carbon dioxide, water, and sunlight to create this form of stored matter.
What is glucose (sugar/food)?
When several food chains connect together, they form this.
What is a food web?
A student removes decomposers from soil in an ecosystem model. Over time, plant growth decreases. This result shows decomposers help return this to the soil.
What are nutrients?
If decomposers increase in an ecosystem, nutrient availability for plants will do this.
What is increase?
If grass decreases in a food chain, what happens to the energy available to rabbits?
What is decreases?
Why are decomposers important to the cycle of matter?
What is "they return nutrients to the environment to reuse by producers"?
If the mouse population decreases, what most likely happens to the hawk population?
What is decrease?
A food web model shows fewer producers after several cloudy weeks. Later, fewer consumers are observed. This result supports the idea that reduced sunlight affects ecosystems by reducing this entering the system.
What is energy?
Why do arrows in food chains point from prey to predator?
What is "they show the direction that energy moves"?