Ecosystems (Flow of energy- Cycles)

How does oxygen cycle back into the environment?

• . through the water cycle
• cellular respiration
• photosynthesis
• nitrogen cycle

How are fungi and bacteria connected in an ecosystem?

• They use biomass to make their food.   
• They both use photosynthesis to make their food
• . They are part of the carbon cycle.
• They are both decomposers

What cycle is bacteria essential to?

• . nitrogen cycle
• water cycle
• carbon cycle
• oxygen cycle

How is energy transferred through an ecosystem?

• from the sun to decomposers
• through cellular respiration
• from producers to consumers
• through mitosis

How do plants get the Carbon Dioxide they need?

• from the sun
• from the soil
• from the atmosphere 
• from the water

How do plants get their energy?

• the Sun         
• mitosis
• the atmosphere
• cellular respiration  

Which is a terrestrial ecosystem?

• corral reef
• polar ice
• forest 
• mangrove swamp

What would be the result of deforestation on an ecosystem?

• loss of habitat
• increase in biomass
• more genetic diversity
• increase in population

In a food web, energy flows from producer to consumers. What else flows from producers to consumers? 

• . soil and rock
• carbon and oxygen  
• light and sound 
• chlorophyll and nitrogen  

Whichbest explains the importance of nitrogen in the cycling of energy and matter? 

• nitrogen increases protein production in plants. 
• Nitrogen decreases protein production in plants.
• Nitrogen decreases the effectiveness of photosynthesis. 
• Nitrogen increases the effectiveness of photosynthesis.