The Circle of Life: Ecosystems Crossword Puzzle

QUESTIONS LIST:

• decomposer: breaks down dead organisms.
• urban ecosystem: human-made environment with limited greenery.
• greenhouse effect: heat trapped by atmospheric gases.
• eutrophication: algal bloom from fertilizer runoff.
• food chain: energy path between organisms.
• ecosystem: interactions of living and non-living things.
• tundra: frozen, treeless biome.
• combustion: burning fuels releasing carbon.
• carbon cycle: movement of carbon through earth’s systems.
• producers: organisms that make their own food.
• acid rain: polluted precipitation.
• pollution: harmful waste entering nature.
• deforestation: clearing forests for land use.
• freshwater ecosystem: rivers, lakes, and ponds.
• marine ecosystem: oceans, seas, and coral reefs.
• herbivore: plant-eating organism.
• carnivore: animal-eating organism.
• omnivore: eats both plants and animals.
• estuary: where freshwater meets saltwater.
• plankton: tiny drifters in water.
• habitat: organism’s natural home.