Biogeochemical cycles

I can identify how nutrients are recycled in the ecosystem.

Learning target

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Match

Match the following.

• Producer

• Consumer

• Decomposer

Makes its own food

Consume other organisms for food

Breaks down dead organisms into nutrients

• Makes its own food

• Consume other organisms for food

• Breaks down dead organisms into nutrients

Multiple Choice

What type of organisms are also called autotrophs?

• Omnivores.

• Consumers.

• Decomposers.

• Producers.

Multiple Select

What are heterotrophs?

• Consumers that eat others.

• Consumers that eat plants.

• Consumers that create what they eat.

Multiple Choice

(True or False)- Organisms that are heterotrophic can make their own food through the process of photosynthesis.

• True

• False

Types of Consumers

Multiple Choice

These microorganisms act as decomposers.

• algae
• virus
• blood cells
• bacteria

Multiple Choice

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

Multiple Choice

What is the carrying capacity of the graph?

• around 500
• more than 500
• less than 500
• around 600

Multiple Choice

What type of growth model is shown in image B?

• Exponential

• Logistic

I can identify how nutrients are recycled in the ecosystem.

Learning target

Multiple Choice

All living things are composed of Carbon

• True

• False

All life is made up of carbon
(other elements too)

All life is made up of carbon
(other elements too)

Multiple Choice

Which of the following add carbon dioxide to the atmosphere?

• volcanoes
• combustion of fossil fuels
• animal and plant respiration
• all of these

Multiple Choice

How do animals get carbon?

• By eating plants and or other animals.

• They absorb it from the atmosphere.

• From the ground

• They do not get carbon from anywhere.

• Proteins are the most abundant organic molecules in living things, and they perform many functions. 

• 
  
  
  
  
  
  
  
  
   

Multiple Choice

What is the role of protein in the body?

• Is the main source of energy for the body

• Helps to build and repair body tissue

• Provide warmth and cushioning to the body's organs

• Helps to transport vitamins through the body

• All of the above are roles of protein in the body

nitrogen is a key element in proteins. 

Multiple Choice

How is nitrogen "fixed" into a usable form for plants?

• Through action of bacteria only

• Through lightning only

• Through action of bacteria and lightning

• Through photosynthesis

nitrogen is a key element in proteins. 

However, nutrients/elements cycles are affected by human activities.

​Learn what are the impacts of human activities by watching the videos posted in your google classroom and answer the questions that follow.