Unit 11 Review Do Now

What is formed during primary succession that doesn't need to be formed during secondary succession?

• pioneer species
• soil
• climax community
• lichens

After a forest fire, an ecosystem would start regrowth through -

• primary succession
• secondary succession
• climax community
• limiting factors

Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?

• A tornado
• A volcanic eruption
• A flood
• A drought

succession that occurs in an area where soil is already present

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles

starts with bare rock followed by lichen

• primary succession 
• secondary succession
• both types of succession

What is a producer?

• Organism that makes its own energy
• Organism that breaks down dead organisms
• Organism that eats other organisms for food & energy

The ___% rule states that only ____% of energy is transferred to the next trophic level.

• 10%
• 25%
• 50%
• 100%

What are "trophic levels"?

• Levels in a food web/food chain
• Levels of land in a mountain
• Animal diets

Panda: Producer, consumer or decomposer?

• Producer
• Consumer
• Decomposer

Grass: Producer, consumer or decomposer?

• Producer
• Consumer
• Decomposer