What is an Ecosystem? Crossword Puzzle

QUESTIONS LIST: omnivores : eat both plants and meat, photosynthesis : the process of using the energy from the sun to make food, earthworms : they make it easy for roots to get air and for water to get into the soil, tundra : a flat, treeless region whose soil beneath is always frozen, scavengers : get energy from eating dead things, producer : a living thing that makes its own food, consumers : living things that get energy from eating other living things, green plants : the most common producer, ecosystem : a natural unit of all the living and nonliving things that interact in one area, predators : they become scavengers when food is hard to find, decomposers : recycle dead organic matter into nutrients in the soil, carnivore : meat-eater, fungi : a common decomposer, herbivore : plant-eater, niche : what they call the role or job of an organism in the ecosystem, soil bacteria : one of the main decomposers of the tundra, twenty four : the tundra is in darkness this many hours in the winter, lichen : one of the main decomposers of the tundra, arctic circle : where most tundra occurs