FOOD CHAINS AND FOOD WEBS
ENERGY PYRAMID
PHOTOSYNTHESIS vs RESPIRATION
MATTER CYCLES
ECOSYSTEM SCENARIOS
100

This organism makes its own food using sunlight.

What is a producer?

100

The level with the MOST energy.

What is trophic level 1 ( Producer Level) 

100

Process plants use to make glucose.

What is photosynthesis?

100

Matter in ecosystems does this instead of being lost.

What is cycles?

100

If producers decrease, what happens to consumers?

What is they decrease?

200

This type of organism eats other organisms for energy.

What is a consumer (heterotroph)?

200

About this percent of energy transfers to the next trophic level.

What is 10%

200

Process that releases energy from glucose.

What is cellular respiration?

200

This element makes up 78% of the atmosphere but must be fixed to be used.

What is nitrogen?

200

If decomposers disappeared, what would happen to nutrients?

What is they would not return to the soil?

300

Arrows in a food chain show this.

What is the direction of energy flow?

300

This is what happens to the other 90% of energy.

What is lost as heat / used for life processes?

300

Gas taken in during photosynthesis.

Gas taken in during photosynthesis.

300

Organisms that return nutrients to the soil.

What are decomposers?

300

Why can energy not be recycled like matter?

What is energy is lost as heat?

400

A network of multiple food chains is called this.

What is a food web?

400

Why are there fewer organisms at the top of the pyramid?

What is less energy available?

400

Gas released during respiration.

What is carbon dioxide?

400

This cycle does NOT heavily involve the atmosphere.

What is the phosphorus cycle?

400

A farmer adds fertilizer (nitrogen). What happens to plant growth?

What is it increases?

500

If a top predator is removed, this happens to the population below it.

➡️ What is the population increases?

500

If producers have 10,000 energy units, how much do secondary consumers get?

What is 100 units?

500

How are photosynthesis and respiration related?

What is the products of one are the reactants of the other?

500

Why is Earth considered a closed system for matter?

What is matter is not created or destroyed, only recycled?

500

A disease wipes out most of the plant life in an ecosystem. Predict how this will affect energy flow and the cycling of matter over time.

WHAT IS

  • Energy flow will decrease because producers are the main source of energy entering the ecosystem.
  • Consumer populations will decrease due to lack of food.
  • Matter cycling will slow because fewer organisms are available to transfer nutrients.
  • Decomposers may temporarily increase (from dead organisms), then decrease as resources run out. 
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