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100

This happens when a population reaches carrying capacity.

What is resources deplete, causing decline or migration

100

This ecosystem shows a high-level of biodiversity.

What is a rainforest?

100

This term describes the gradual recovery of an ecosystem.

What is succession? 

100

This factor influences carrying capacity.

What is resource availability?

100

The Shannon index is used for this purpose.

What is measuring biodiversity? 

200

Which process removes carbon dioxide from the atmosphere? 

What is photosynthesis?

200

A low biodiversity level indicates this.

What is environmental stress?

200

This is an example of a keystone species.

What are wolves in Yellowstone?

200

This is an example of a limiting factor.

What is something that slows down or prevents population growth?

200

This is the definition of carrying capacity.

What is the maximum number of individuals an environment can support?

300

This is the most essential element as it is a part of all organic compounds.

What is carbon?

300

This reduces biodiversity the most.

What is the introduction of invasive species?

300

This is why a high biodiversity is important for ecosystem stability.

What is it helps ecosystems recover from disturbances?

300

This statement best describes logarithmic growth.

What is a population grows rapidly at first, then slows as it reaches carrying capacity?

300

This statement best describes biodiversity.

What is the variety of life in an ecosystem?

400

Deforestation has this effect on the carbon cycle.

What is it increases carbon dioxide levels?

400

This happens when a population experiences a disturbance but some organisms are still present.  

What is secondary succession? 

400

This is the impact of algal blooms caused by excess nitrogen in water bodies.

What is to deplete oxygen and harm aquatic life?

400

This describes the process of urbanization.

What is the formation and expansion of towns and cities?

400

This is human activity is the most significant when talking about the impact on the nitrogen cycle.

What is adding excess nitrogen through fertilizers?

500

This human activity most significantly affects the nitrogen cycle.

What is adding excessive nitrogen through fertilizers?

500

Interspecific competition is defined as this.

What is competition between organisms of different species for the same resources?

500

This process converts ammonium into nitrates.

What is nitrification?

500

This statement describes preservation.

What is a wild area kept safe from controllable disturbances?

Remember, preservation differs from conservation because conservation still utilizes the resources. 

500

This is why some organisms perform chemosynthesis or other processes to produce energy.

What is there is no sunlight?