All Flashcards
What is a biome?
Large-scale ecosystem characterized by climate and organisms.
What is biomass?
Total mass of living organisms in a given area.
What is a closed system?
A system where matter is recycled, not lost.
What is mutualism?
Species interaction where both benefit.
What is commensalism?
Species interaction where one benefits, the other is unaffected.
What is parasitism?
Species interaction where one benefits, the other is harmed.
What are trophic levels?
Levels showing how energy moves through an ecosystem.
What is adaptation?
Traits that help organisms survive and reproduce.
What is evolution?
Change in genetic makeup of a population over time.
What are producers?
Organisms (plants) that create their own food, bottom of trophic level.
What is a biome?
Large-scale ecosystem characterized by climate and organisms.
What is biomass?
The total mass of living organisms in a given area.
What is a closed system?
A system where matter is recycled, not lost.
Define mutualism.
An interaction where both species benefit.
Define commensalism.
An interaction where one species benefits, the other is unaffected.
Define parasitism.
An interaction where one species benefits, the other is harmed.
Define predator-prey relationship.
One species hunts and kills another.
What are trophic levels?
Levels in an ecosystem showing how energy moves through it.
What is adaptation?
Traits that help organisms survive and reproduce.
What is evolution?
Change in the genetic makeup of a population over time.
What is the effect of deforestation on the carbon cycle?
Reduces carbon sequestration, increases atmospheric carbon dioxide.
What is the effect of agricultural runoff on the nitrogen cycle?
Increased runoff of nitrogen fertilizers can lead to eutrophication.
What is the effect of climate change on biomes?
Shifts biome boundaries, alters species distributions, disrupts ecosystem stability.
What is the effect of excess carbon dioxide in the atmosphere?
Traps heat and contributes to climate change.
What is the effect of inefficient energy transfer between trophic levels?
Fewer top predators than producers.