Show:
Biogeochemical Cycles
Ecosystem Energy Flow
Human Impact and Case Studies
Species interactions
Ecological Succession
100
What is the main way carbon dioxide enters the atmosphere from living things?

What is respiration?

100

What is the main source of energy for most life on earth?

What is the sun?

100

What happened to Yellowstone's elk population after wolves were removed?

What is increased and overgrazed plants?

100

In this symbiotic relationship, both species benefit

What is mutualism?

100
What is gradual change in ecosystems over time called?

What is ecological succession?

200
Plants absorb nitrogen from the soil mostly in this form

What are nitrates?

200

In a food chain, arrows represent this

What is the flow of energy?

200

Reintroducing wolves helped restore ecosystem balance, what would occur if nothing was changed?

What is a trophic cascade?

200
Sharks and small fish (remoras) demonstrate this relationship, where one organism benefits and the other is unaffected.

What is commensalism?

200

Succession occurs after a disturbance such as a fire or a flood 

What is secondary succession?

300

Plants take up nitrogen in usable forms through this process

What is assimilation?

300

This type of consumer eats dead or decomposing matter

What is a detritivore?

300

What caused the algae bloom in Lake Okechobee in 2016?

What is fertilizer run off and nitrogen build-up?

300
This type of relationship involves one organism benefiting while harming another

What is parasitism?

300

The first organisms to colonize a barren environment

What are pioneer species?

400

During this part of the water cycle, water vapor in the air cools down and changes back into liquid forming clouds

What is condensation?

400

How would removing a secondary consumer affect producers in a food web?

What is an increase in primary consumers leading to overgrazing and producer decline?

400

Why can algae blooms harm fish?

What is they reduce oxygen in the water?

400

Give an example of a predator prey relationship discussed in class

What are wolves and elk?

400

The final stable stage of succession

What is climax community?

500

How could deforestation disrupt the carbon cycle on both local and global scales?

What is reducing CO2 absorption locally and increasing CO2 in the atmosphere globally?

500

In most ecosystems, only about 10% of energy passes to the next trophic level. Where does the other 90% go

What is lost and released as heat?

500

How can humans reduce nitrogen runoff into waterways?

What is using less fertilizer?

500

This type of species is critical for maintaining ecosystem balance

What is a keystone species?

500

Succession occurring on newly formed ground with no soil, such as volcanic rock

What is primary succession?