Living World Flashcards
What is the definition of ecosystems?
Ecosystems are communities of living organisms interacting with their physical environment.
True or False: Biomes are large areas characterized by specific climate conditions and plant communities.
True
Fill in the blank: The _____ is the layer of Earth where living organisms exist.
biosphere
What are the two main components of an ecosystem?
Biotic (living) and abiotic (non-living) components.
Name one example of a terrestrial biome.
Desert, forest, tundra, grassland.
What is biodiversity?
Biodiversity refers to the variety of living organisms in a particular area.
True or False: Primary producers are organisms that can produce their own food through photosynthesis.
True
What role do decomposers play in an ecosystem?
Decomposers break down dead organic material, recycling nutrients back into the ecosystem.
Multiple Choice: Which of the following is a freshwater ecosystem? A) Coral reef B) Lake C) Desert D) Tundra
B) Lake
What is the main cause of deforestation?
Agricultural expansion, logging, and urban development.
Fill in the blank: The _____ cycle describes the movement of water through the environment.
water
What is a food chain?
A food chain is a linear sequence showing how energy and nutrients flow from one organism to another.
True or False: Climate change does not affect ecosystems.
False
What is an invasive species?
An invasive species is a non-native species that spreads widely and causes harm to the environment.
Multiple Choice: Which biome is characterized by high temperatures and low rainfall? A) Savanna B) Tundra C) Temperate forest D) Desert
D) Desert
What is the greenhouse effect?
The greenhouse effect is the warming of Earth due to trapped heat from greenhouse gases.
Fill in the blank: The _____ is the part of the Earth that supports life.
lithosphere
What is the significance of the carbon cycle?
The carbon cycle regulates climate and supports life through the exchange of carbon among the atmosphere, land, and oceans.
True or False: All organisms in an ecosystem have a niche.
True
What is the difference between a habitat and a niche?
A habitat is where an organism lives; a niche is the role or function of that organism within the ecosystem.
Name one impact of pollution on ecosystems.
Habitat destruction, species extinction, and health risks to organisms.
Multiple Choice: Which of the following is NOT a renewable resource? A) Solar energy B) Wind energy C) Fossil fuels D) Biomass
C) Fossil fuels
What is the role of pollinators in ecosystems?
Pollinators facilitate the reproduction of flowering plants by transferring pollen.
Fill in the blank: _____ succession is the process of change in species structure in an ecological community over time.
Ecological
