Ecosystems & Interactions

An ecosystem is ...

The non-living ecosystem components, such as water, soil, and light, are called ... components.

Organisms that can make their own food through photosynthesis are called ...

Animals that eat plants are called ...

Organisms that break down the remains of dead living things are called ...

The one-way sequence of eating and being eaten in an ecosystem is called ...

A collection of interconnected food chains is called ...

The ecological pyramid that shows the decrease in the number of individuals at each trophic level is the pyramid of ...

A relationship between two organisms that benefits both is called ...

The symbiosis between remora fish and sharks is an example of ...

The relationship between lice and humans is an example of ...

Energy in an ecosystem flows from ...

The biogeochemical cycle involving photosynthesis and respiration is the ... cycle.

A terrestrial ecosystem dominated by woody trees and with high rainfall is called ...

The bacteria Rhizobium and Azotobacter play a role in the nitrogen cycle during ...

An increase in atmospheric carbon dioxide can cause ...

The gradual change of a community toward a climax community is called ...

If the grasshopper population in a rice-field ecosystem drops sharply, the likely impact is ...

If producers hold 10,000 kcal of energy, the energy reaching second-level consumers is about ...

An appropriate effort to maintain ecosystem balance is ...