Nutrient Cycles and Succession

Nutrient Cycles

By Samantha Easterling

Multiple Choice

What would happen to heterotrophs if all autotrophs (plants, trees, algae) went extinct?

• Heterotrophs would eventually die out too

• Heterotrophs would take over the world

• Heterotrophs would have to eat each other

• Heterotrophs would do just fine

All organisms need nutrients!

Nutrients and energy are transferred from organism to organism and ultimately returned to the soil, which is used by plants.

Nutrients are cycled in an ecosystem

Nutrients are taken in by organisms when they eat and are turned into a more useable form, like macromolecules!

Multiple Choice

Carbohydrates are made of... 

• C H O
• C H O N
• C H O N P
• C H O N S

Multiple Choice

Lipids are made of... 

• C H O
• C H O N
• C H O N P
• C H O N S

Multiple Choice

Proteins are made of... 

• C H O
• C H O N
• C H O N P
• C H O N S

Nutrient Cycles Coloring Worksheet

Carbon, Nitrogen, Oxygen, Phosphorus, Water Cycles

Multiple Choice

Which type of reaches the climax community faster?

• primary succession

• secondary succession

Multiple Choice

Which type of succession happens when a new island is formed by a volcano erupting?

• primary succession

• secondary succession